mtd: nand: move raw NAND related code to the raw/ subdir

As part of the process of sharing more code between different NAND
based devices, we need to move all raw NAND related code to the raw/
subdirectory.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>

1 files changed, 0 insertions, 2620 deletions

diff --git a/drivers/mtd/nand/brcmnand/brcmnand.c b/drivers/mtd/nand/brcmnand/brcmnand.c
deleted file mode 100644
index c28fd2bc1a84..000000000000
--- a/drivers/mtd/nand/brcmnand/brcmnand.c
+++ /dev/null
@@ -1,2620 +0,0 @@
-/*
- * Copyright © 2010-2015 Broadcom Corporation
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/clk.h>
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/err.h>
-#include <linux/completion.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/dma-mapping.h>
-#include <linux/ioport.h>
-#include <linux/bug.h>
-#include <linux/kernel.h>
-#include <linux/bitops.h>
-#include <linux/mm.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/rawnand.h>
-#include <linux/mtd/partitions.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/slab.h>
-#include <linux/list.h>
-#include <linux/log2.h>
-
-#include "brcmnand.h"
-
-/*
- * This flag controls if WP stays on between erase/write commands to mitigate
- * flash corruption due to power glitches. Values:
- * 0: NAND_WP is not used or not available
- * 1: NAND_WP is set by default, cleared for erase/write operations
- * 2: NAND_WP is always cleared
- */
-static int wp_on = 1;
-module_param(wp_on, int, 0444);
-
-/***********************************************************************
- * Definitions
- ***********************************************************************/
-
-#define DRV_NAME			"brcmnand"
-
-#define CMD_NULL			0x00
-#define CMD_PAGE_READ			0x01
-#define CMD_SPARE_AREA_READ		0x02
-#define CMD_STATUS_READ			0x03
-#define CMD_PROGRAM_PAGE		0x04
-#define CMD_PROGRAM_SPARE_AREA		0x05
-#define CMD_COPY_BACK			0x06
-#define CMD_DEVICE_ID_READ		0x07
-#define CMD_BLOCK_ERASE			0x08
-#define CMD_FLASH_RESET			0x09
-#define CMD_BLOCKS_LOCK			0x0a
-#define CMD_BLOCKS_LOCK_DOWN		0x0b
-#define CMD_BLOCKS_UNLOCK		0x0c
-#define CMD_READ_BLOCKS_LOCK_STATUS	0x0d
-#define CMD_PARAMETER_READ		0x0e
-#define CMD_PARAMETER_CHANGE_COL	0x0f
-#define CMD_LOW_LEVEL_OP		0x10
-
-struct brcm_nand_dma_desc {
-	u32 next_desc;
-	u32 next_desc_ext;
-	u32 cmd_irq;
-	u32 dram_addr;
-	u32 dram_addr_ext;
-	u32 tfr_len;
-	u32 total_len;
-	u32 flash_addr;
-	u32 flash_addr_ext;
-	u32 cs;
-	u32 pad2[5];
-	u32 status_valid;
-} __packed;
-
-/* Bitfields for brcm_nand_dma_desc::status_valid */
-#define FLASH_DMA_ECC_ERROR	(1 << 8)
-#define FLASH_DMA_CORR_ERROR	(1 << 9)
-
-/* 512B flash cache in the NAND controller HW */
-#define FC_SHIFT		9U
-#define FC_BYTES		512U
-#define FC_WORDS		(FC_BYTES >> 2)
-
-#define BRCMNAND_MIN_PAGESIZE	512
-#define BRCMNAND_MIN_BLOCKSIZE	(8 * 1024)
-#define BRCMNAND_MIN_DEVSIZE	(4ULL * 1024 * 1024)
-
-#define NAND_CTRL_RDY			(INTFC_CTLR_READY | INTFC_FLASH_READY)
-#define NAND_POLL_STATUS_TIMEOUT_MS	100
-
-/* Controller feature flags */
-enum {
-	BRCMNAND_HAS_1K_SECTORS			= BIT(0),
-	BRCMNAND_HAS_PREFETCH			= BIT(1),
-	BRCMNAND_HAS_CACHE_MODE			= BIT(2),
-	BRCMNAND_HAS_WP				= BIT(3),
-};
-
-struct brcmnand_controller {
-	struct device		*dev;
-	struct nand_hw_control	controller;
-	void __iomem		*nand_base;
-	void __iomem		*nand_fc; /* flash cache */
-	void __iomem		*flash_dma_base;
-	unsigned int		irq;
-	unsigned int		dma_irq;
-	int			nand_version;
-
-	/* Some SoCs provide custom interrupt status register(s) */
-	struct brcmnand_soc	*soc;
-
-	/* Some SoCs have a gateable clock for the controller */
-	struct clk		*clk;
-
-	int			cmd_pending;
-	bool			dma_pending;
-	struct completion	done;
-	struct completion	dma_done;
-
-	/* List of NAND hosts (one for each chip-select) */
-	struct list_head host_list;
-
-	struct brcm_nand_dma_desc *dma_desc;
-	dma_addr_t		dma_pa;
-
-	/* in-memory cache of the FLASH_CACHE, used only for some commands */
-	u8			flash_cache[FC_BYTES];
-
-	/* Controller revision details */
-	const u16		*reg_offsets;
-	unsigned int		reg_spacing; /* between CS1, CS2, ... regs */
-	const u8		*cs_offsets; /* within each chip-select */
-	const u8		*cs0_offsets; /* within CS0, if different */
-	unsigned int		max_block_size;
-	const unsigned int	*block_sizes;
-	unsigned int		max_page_size;
-	const unsigned int	*page_sizes;
-	unsigned int		max_oob;
-	u32			features;
-
-	/* for low-power standby/resume only */
-	u32			nand_cs_nand_select;
-	u32			nand_cs_nand_xor;
-	u32			corr_stat_threshold;
-	u32			flash_dma_mode;
-};
-
-struct brcmnand_cfg {
-	u64			device_size;
-	unsigned int		block_size;
-	unsigned int		page_size;
-	unsigned int		spare_area_size;
-	unsigned int		device_width;
-	unsigned int		col_adr_bytes;
-	unsigned int		blk_adr_bytes;
-	unsigned int		ful_adr_bytes;
-	unsigned int		sector_size_1k;
-	unsigned int		ecc_level;
-	/* use for low-power standby/resume only */
-	u32			acc_control;
-	u32			config;
-	u32			config_ext;
-	u32			timing_1;
-	u32			timing_2;
-};
-
-struct brcmnand_host {
-	struct list_head	node;
-
-	struct nand_chip	chip;
-	struct platform_device	*pdev;
-	int			cs;
-
-	unsigned int		last_cmd;
-	unsigned int		last_byte;
-	u64			last_addr;
-	struct brcmnand_cfg	hwcfg;
-	struct brcmnand_controller *ctrl;
-};
-
-enum brcmnand_reg {
-	BRCMNAND_CMD_START = 0,
-	BRCMNAND_CMD_EXT_ADDRESS,
-	BRCMNAND_CMD_ADDRESS,
-	BRCMNAND_INTFC_STATUS,
-	BRCMNAND_CS_SELECT,
-	BRCMNAND_CS_XOR,
-	BRCMNAND_LL_OP,
-	BRCMNAND_CS0_BASE,
-	BRCMNAND_CS1_BASE,		/* CS1 regs, if non-contiguous */
-	BRCMNAND_CORR_THRESHOLD,
-	BRCMNAND_CORR_THRESHOLD_EXT,
-	BRCMNAND_UNCORR_COUNT,
-	BRCMNAND_CORR_COUNT,
-	BRCMNAND_CORR_EXT_ADDR,
-	BRCMNAND_CORR_ADDR,
-	BRCMNAND_UNCORR_EXT_ADDR,
-	BRCMNAND_UNCORR_ADDR,
-	BRCMNAND_SEMAPHORE,
-	BRCMNAND_ID,
-	BRCMNAND_ID_EXT,
-	BRCMNAND_LL_RDATA,
-	BRCMNAND_OOB_READ_BASE,
-	BRCMNAND_OOB_READ_10_BASE,	/* offset 0x10, if non-contiguous */
-	BRCMNAND_OOB_WRITE_BASE,
-	BRCMNAND_OOB_WRITE_10_BASE,	/* offset 0x10, if non-contiguous */
-	BRCMNAND_FC_BASE,
-};
-
-/* BRCMNAND v4.0 */
-static const u16 brcmnand_regs_v40[] = {
-	[BRCMNAND_CMD_START]		=  0x04,
-	[BRCMNAND_CMD_EXT_ADDRESS]	=  0x08,
-	[BRCMNAND_CMD_ADDRESS]		=  0x0c,
-	[BRCMNAND_INTFC_STATUS]		=  0x6c,
-	[BRCMNAND_CS_SELECT]		=  0x14,
-	[BRCMNAND_CS_XOR]		=  0x18,
-	[BRCMNAND_LL_OP]		= 0x178,
-	[BRCMNAND_CS0_BASE]		=  0x40,
-	[BRCMNAND_CS1_BASE]		=  0xd0,
-	[BRCMNAND_CORR_THRESHOLD]	=  0x84,
-	[BRCMNAND_CORR_THRESHOLD_EXT]	=     0,
-	[BRCMNAND_UNCORR_COUNT]		=     0,
-	[BRCMNAND_CORR_COUNT]		=     0,
-	[BRCMNAND_CORR_EXT_ADDR]	=  0x70,
-	[BRCMNAND_CORR_ADDR]		=  0x74,
-	[BRCMNAND_UNCORR_EXT_ADDR]	=  0x78,
-	[BRCMNAND_UNCORR_ADDR]		=  0x7c,
-	[BRCMNAND_SEMAPHORE]		=  0x58,
-	[BRCMNAND_ID]			=  0x60,
-	[BRCMNAND_ID_EXT]		=  0x64,
-	[BRCMNAND_LL_RDATA]		= 0x17c,
-	[BRCMNAND_OOB_READ_BASE]	=  0x20,
-	[BRCMNAND_OOB_READ_10_BASE]	= 0x130,
-	[BRCMNAND_OOB_WRITE_BASE]	=  0x30,
-	[BRCMNAND_OOB_WRITE_10_BASE]	=     0,
-	[BRCMNAND_FC_BASE]		= 0x200,
-};
-
-/* BRCMNAND v5.0 */
-static const u16 brcmnand_regs_v50[] = {
-	[BRCMNAND_CMD_START]		=  0x04,
-	[BRCMNAND_CMD_EXT_ADDRESS]	=  0x08,
-	[BRCMNAND_CMD_ADDRESS]		=  0x0c,
-	[BRCMNAND_INTFC_STATUS]		=  0x6c,
-	[BRCMNAND_CS_SELECT]		=  0x14,
-	[BRCMNAND_CS_XOR]		=  0x18,
-	[BRCMNAND_LL_OP]		= 0x178,
-	[BRCMNAND_CS0_BASE]		=  0x40,
-	[BRCMNAND_CS1_BASE]		=  0xd0,
-	[BRCMNAND_CORR_THRESHOLD]	=  0x84,
-	[BRCMNAND_CORR_THRESHOLD_EXT]	=     0,
-	[BRCMNAND_UNCORR_COUNT]		=     0,
-	[BRCMNAND_CORR_COUNT]		=     0,
-	[BRCMNAND_CORR_EXT_ADDR]	=  0x70,
-	[BRCMNAND_CORR_ADDR]		=  0x74,
-	[BRCMNAND_UNCORR_EXT_ADDR]	=  0x78,
-	[BRCMNAND_UNCORR_ADDR]		=  0x7c,
-	[BRCMNAND_SEMAPHORE]		=  0x58,
-	[BRCMNAND_ID]			=  0x60,
-	[BRCMNAND_ID_EXT]		=  0x64,
-	[BRCMNAND_LL_RDATA]		= 0x17c,
-	[BRCMNAND_OOB_READ_BASE]	=  0x20,
-	[BRCMNAND_OOB_READ_10_BASE]	= 0x130,
-	[BRCMNAND_OOB_WRITE_BASE]	=  0x30,
-	[BRCMNAND_OOB_WRITE_10_BASE]	= 0x140,
-	[BRCMNAND_FC_BASE]		= 0x200,
-};
-
-/* BRCMNAND v6.0 - v7.1 */
-static const u16 brcmnand_regs_v60[] = {
-	[BRCMNAND_CMD_START]		=  0x04,
-	[BRCMNAND_CMD_EXT_ADDRESS]	=  0x08,
-	[BRCMNAND_CMD_ADDRESS]		=  0x0c,
-	[BRCMNAND_INTFC_STATUS]		=  0x14,
-	[BRCMNAND_CS_SELECT]		=  0x18,
-	[BRCMNAND_CS_XOR]		=  0x1c,
-	[BRCMNAND_LL_OP]		=  0x20,
-	[BRCMNAND_CS0_BASE]		=  0x50,
-	[BRCMNAND_CS1_BASE]		=     0,
-	[BRCMNAND_CORR_THRESHOLD]	=  0xc0,
-	[BRCMNAND_CORR_THRESHOLD_EXT]	=  0xc4,
-	[BRCMNAND_UNCORR_COUNT]		=  0xfc,
-	[BRCMNAND_CORR_COUNT]		= 0x100,
-	[BRCMNAND_CORR_EXT_ADDR]	= 0x10c,
-	[BRCMNAND_CORR_ADDR]		= 0x110,
-	[BRCMNAND_UNCORR_EXT_ADDR]	= 0x114,
-	[BRCMNAND_UNCORR_ADDR]		= 0x118,
-	[BRCMNAND_SEMAPHORE]		= 0x150,
-	[BRCMNAND_ID]			= 0x194,
-	[BRCMNAND_ID_EXT]		= 0x198,
-	[BRCMNAND_LL_RDATA]		= 0x19c,
-	[BRCMNAND_OOB_READ_BASE]	= 0x200,
-	[BRCMNAND_OOB_READ_10_BASE]	=     0,
-	[BRCMNAND_OOB_WRITE_BASE]	= 0x280,
-	[BRCMNAND_OOB_WRITE_10_BASE]	=     0,
-	[BRCMNAND_FC_BASE]		= 0x400,
-};
-
-/* BRCMNAND v7.1 */
-static const u16 brcmnand_regs_v71[] = {
-	[BRCMNAND_CMD_START]		=  0x04,
-	[BRCMNAND_CMD_EXT_ADDRESS]	=  0x08,
-	[BRCMNAND_CMD_ADDRESS]		=  0x0c,
-	[BRCMNAND_INTFC_STATUS]		=  0x14,
-	[BRCMNAND_CS_SELECT]		=  0x18,
-	[BRCMNAND_CS_XOR]		=  0x1c,
-	[BRCMNAND_LL_OP]		=  0x20,
-	[BRCMNAND_CS0_BASE]		=  0x50,
-	[BRCMNAND_CS1_BASE]		=     0,
-	[BRCMNAND_CORR_THRESHOLD]	=  0xdc,
-	[BRCMNAND_CORR_THRESHOLD_EXT]	=  0xe0,
-	[BRCMNAND_UNCORR_COUNT]		=  0xfc,
-	[BRCMNAND_CORR_COUNT]		= 0x100,
-	[BRCMNAND_CORR_EXT_ADDR]	= 0x10c,
-	[BRCMNAND_CORR_ADDR]		= 0x110,
-	[BRCMNAND_UNCORR_EXT_ADDR]	= 0x114,
-	[BRCMNAND_UNCORR_ADDR]		= 0x118,
-	[BRCMNAND_SEMAPHORE]		= 0x150,
-	[BRCMNAND_ID]			= 0x194,
-	[BRCMNAND_ID_EXT]		= 0x198,
-	[BRCMNAND_LL_RDATA]		= 0x19c,
-	[BRCMNAND_OOB_READ_BASE]	= 0x200,
-	[BRCMNAND_OOB_READ_10_BASE]	=     0,
-	[BRCMNAND_OOB_WRITE_BASE]	= 0x280,
-	[BRCMNAND_OOB_WRITE_10_BASE]	=     0,
-	[BRCMNAND_FC_BASE]		= 0x400,
-};
-
-/* BRCMNAND v7.2 */
-static const u16 brcmnand_regs_v72[] = {
-	[BRCMNAND_CMD_START]		=  0x04,
-	[BRCMNAND_CMD_EXT_ADDRESS]	=  0x08,
-	[BRCMNAND_CMD_ADDRESS]		=  0x0c,
-	[BRCMNAND_INTFC_STATUS]		=  0x14,
-	[BRCMNAND_CS_SELECT]		=  0x18,
-	[BRCMNAND_CS_XOR]		=  0x1c,
-	[BRCMNAND_LL_OP]		=  0x20,
-	[BRCMNAND_CS0_BASE]		=  0x50,
-	[BRCMNAND_CS1_BASE]		=     0,
-	[BRCMNAND_CORR_THRESHOLD]	=  0xdc,
-	[BRCMNAND_CORR_THRESHOLD_EXT]	=  0xe0,
-	[BRCMNAND_UNCORR_COUNT]		=  0xfc,
-	[BRCMNAND_CORR_COUNT]		= 0x100,
-	[BRCMNAND_CORR_EXT_ADDR]	= 0x10c,
-	[BRCMNAND_CORR_ADDR]		= 0x110,
-	[BRCMNAND_UNCORR_EXT_ADDR]	= 0x114,
-	[BRCMNAND_UNCORR_ADDR]		= 0x118,
-	[BRCMNAND_SEMAPHORE]		= 0x150,
-	[BRCMNAND_ID]			= 0x194,
-	[BRCMNAND_ID_EXT]		= 0x198,
-	[BRCMNAND_LL_RDATA]		= 0x19c,
-	[BRCMNAND_OOB_READ_BASE]	= 0x200,
-	[BRCMNAND_OOB_READ_10_BASE]	=     0,
-	[BRCMNAND_OOB_WRITE_BASE]	= 0x400,
-	[BRCMNAND_OOB_WRITE_10_BASE]	=     0,
-	[BRCMNAND_FC_BASE]		= 0x600,
-};
-
-enum brcmnand_cs_reg {
-	BRCMNAND_CS_CFG_EXT = 0,
-	BRCMNAND_CS_CFG,
-	BRCMNAND_CS_ACC_CONTROL,
-	BRCMNAND_CS_TIMING1,
-	BRCMNAND_CS_TIMING2,
-};
-
-/* Per chip-select offsets for v7.1 */
-static const u8 brcmnand_cs_offsets_v71[] = {
-	[BRCMNAND_CS_ACC_CONTROL]	= 0x00,
-	[BRCMNAND_CS_CFG_EXT]		= 0x04,
-	[BRCMNAND_CS_CFG]		= 0x08,
-	[BRCMNAND_CS_TIMING1]		= 0x0c,
-	[BRCMNAND_CS_TIMING2]		= 0x10,
-};
-
-/* Per chip-select offsets for pre v7.1, except CS0 on <= v5.0 */
-static const u8 brcmnand_cs_offsets[] = {
-	[BRCMNAND_CS_ACC_CONTROL]	= 0x00,
-	[BRCMNAND_CS_CFG_EXT]		= 0x04,
-	[BRCMNAND_CS_CFG]		= 0x04,
-	[BRCMNAND_CS_TIMING1]		= 0x08,
-	[BRCMNAND_CS_TIMING2]		= 0x0c,
-};
-
-/* Per chip-select offset for <= v5.0 on CS0 only */
-static const u8 brcmnand_cs_offsets_cs0[] = {
-	[BRCMNAND_CS_ACC_CONTROL]	= 0x00,
-	[BRCMNAND_CS_CFG_EXT]		= 0x08,
-	[BRCMNAND_CS_CFG]		= 0x08,
-	[BRCMNAND_CS_TIMING1]		= 0x10,
-	[BRCMNAND_CS_TIMING2]		= 0x14,
-};
-
-/*
- * Bitfields for the CFG and CFG_EXT registers. Pre-v7.1 controllers only had
- * one config register, but once the bitfields overflowed, newer controllers
- * (v7.1 and newer) added a CFG_EXT register and shuffled a few fields around.
- */
-enum {
-	CFG_BLK_ADR_BYTES_SHIFT		= 8,
-	CFG_COL_ADR_BYTES_SHIFT		= 12,
-	CFG_FUL_ADR_BYTES_SHIFT		= 16,
-	CFG_BUS_WIDTH_SHIFT		= 23,
-	CFG_BUS_WIDTH			= BIT(CFG_BUS_WIDTH_SHIFT),
-	CFG_DEVICE_SIZE_SHIFT		= 24,
-
-	/* Only for pre-v7.1 (with no CFG_EXT register) */
-	CFG_PAGE_SIZE_SHIFT		= 20,
-	CFG_BLK_SIZE_SHIFT		= 28,
-
-	/* Only for v7.1+ (with CFG_EXT register) */
-	CFG_EXT_PAGE_SIZE_SHIFT		= 0,
-	CFG_EXT_BLK_SIZE_SHIFT		= 4,
-};
-
-/* BRCMNAND_INTFC_STATUS */
-enum {
-	INTFC_FLASH_STATUS		= GENMASK(7, 0),
-
-	INTFC_ERASED			= BIT(27),
-	INTFC_OOB_VALID			= BIT(28),
-	INTFC_CACHE_VALID		= BIT(29),
-	INTFC_FLASH_READY		= BIT(30),
-	INTFC_CTLR_READY		= BIT(31),
-};
-
-static inline u32 nand_readreg(struct brcmnand_controller *ctrl, u32 offs)
-{
-	return brcmnand_readl(ctrl->nand_base + offs);
-}
-
-static inline void nand_writereg(struct brcmnand_controller *ctrl, u32 offs,
-				 u32 val)
-{
-	brcmnand_writel(val, ctrl->nand_base + offs);
-}
-
-static int brcmnand_revision_init(struct brcmnand_controller *ctrl)
-{
-	static const unsigned int block_sizes_v6[] = { 8, 16, 128, 256, 512, 1024, 2048, 0 };
-	static const unsigned int block_sizes_v4[] = { 16, 128, 8, 512, 256, 1024, 2048, 0 };
-	static const unsigned int page_sizes[] = { 512, 2048, 4096, 8192, 0 };
-
-	ctrl->nand_version = nand_readreg(ctrl, 0) & 0xffff;
-
-	/* Only support v4.0+? */
-	if (ctrl->nand_version < 0x0400) {
-		dev_err(ctrl->dev, "version %#x not supported\n",
-			ctrl->nand_version);
-		return -ENODEV;
-	}
-
-	/* Register offsets */
-	if (ctrl->nand_version >= 0x0702)
-		ctrl->reg_offsets = brcmnand_regs_v72;
-	else if (ctrl->nand_version >= 0x0701)
-		ctrl->reg_offsets = brcmnand_regs_v71;
-	else if (ctrl->nand_version >= 0x0600)
-		ctrl->reg_offsets = brcmnand_regs_v60;
-	else if (ctrl->nand_version >= 0x0500)
-		ctrl->reg_offsets = brcmnand_regs_v50;
-	else if (ctrl->nand_version >= 0x0400)
-		ctrl->reg_offsets = brcmnand_regs_v40;
-
-	/* Chip-select stride */
-	if (ctrl->nand_version >= 0x0701)
-		ctrl->reg_spacing = 0x14;
-	else
-		ctrl->reg_spacing = 0x10;
-
-	/* Per chip-select registers */
-	if (ctrl->nand_version >= 0x0701) {
-		ctrl->cs_offsets = brcmnand_cs_offsets_v71;
-	} else {
-		ctrl->cs_offsets = brcmnand_cs_offsets;
-
-		/* v5.0 and earlier has a different CS0 offset layout */
-		if (ctrl->nand_version <= 0x0500)
-			ctrl->cs0_offsets = brcmnand_cs_offsets_cs0;
-	}
-
-	/* Page / block sizes */
-	if (ctrl->nand_version >= 0x0701) {
-		/* >= v7.1 use nice power-of-2 values! */
-		ctrl->max_page_size = 16 * 1024;
-		ctrl->max_block_size = 2 * 1024 * 1024;
-	} else {
-		ctrl->page_sizes = page_sizes;
-		if (ctrl->nand_version >= 0x0600)
-			ctrl->block_sizes = block_sizes_v6;
-		else
-			ctrl->block_sizes = block_sizes_v4;
-
-		if (ctrl->nand_version < 0x0400) {
-			ctrl->max_page_size = 4096;
-			ctrl->max_block_size = 512 * 1024;
-		}
-	}
-
-	/* Maximum spare area sector size (per 512B) */
-	if (ctrl->nand_version >= 0x0702)
-		ctrl->max_oob = 128;
-	else if (ctrl->nand_version >= 0x0600)
-		ctrl->max_oob = 64;
-	else if (ctrl->nand_version >= 0x0500)
-		ctrl->max_oob = 32;
-	else
-		ctrl->max_oob = 16;
-
-	/* v6.0 and newer (except v6.1) have prefetch support */
-	if (ctrl->nand_version >= 0x0600 && ctrl->nand_version != 0x0601)
-		ctrl->features |= BRCMNAND_HAS_PREFETCH;
-
-	/*
-	 * v6.x has cache mode, but it's implemented differently. Ignore it for
-	 * now.
-	 */
-	if (ctrl->nand_version >= 0x0700)
-		ctrl->features |= BRCMNAND_HAS_CACHE_MODE;
-
-	if (ctrl->nand_version >= 0x0500)
-		ctrl->features |= BRCMNAND_HAS_1K_SECTORS;
-
-	if (ctrl->nand_version >= 0x0700)
-		ctrl->features |= BRCMNAND_HAS_WP;
-	else if (of_property_read_bool(ctrl->dev->of_node, "brcm,nand-has-wp"))
-		ctrl->features |= BRCMNAND_HAS_WP;
-
-	return 0;
-}
-
-static inline u32 brcmnand_read_reg(struct brcmnand_controller *ctrl,
-		enum brcmnand_reg reg)
-{
-	u16 offs = ctrl->reg_offsets[reg];
-
-	if (offs)
-		return nand_readreg(ctrl, offs);
-	else
-		return 0;
-}
-
-static inline void brcmnand_write_reg(struct brcmnand_controller *ctrl,
-				      enum brcmnand_reg reg, u32 val)
-{
-	u16 offs = ctrl->reg_offsets[reg];
-
-	if (offs)
-		nand_writereg(ctrl, offs, val);
-}
-
-static inline void brcmnand_rmw_reg(struct brcmnand_controller *ctrl,
-				    enum brcmnand_reg reg, u32 mask, unsigned
-				    int shift, u32 val)
-{
-	u32 tmp = brcmnand_read_reg(ctrl, reg);
-
-	tmp &= ~mask;
-	tmp |= val << shift;
-	brcmnand_write_reg(ctrl, reg, tmp);
-}
-
-static inline u32 brcmnand_read_fc(struct brcmnand_controller *ctrl, int word)
-{
-	return __raw_readl(ctrl->nand_fc + word * 4);
-}
-
-static inline void brcmnand_write_fc(struct brcmnand_controller *ctrl,
-				     int word, u32 val)
-{
-	__raw_writel(val, ctrl->nand_fc + word * 4);
-}
-
-static inline u16 brcmnand_cs_offset(struct brcmnand_controller *ctrl, int cs,
-				     enum brcmnand_cs_reg reg)
-{
-	u16 offs_cs0 = ctrl->reg_offsets[BRCMNAND_CS0_BASE];
-	u16 offs_cs1 = ctrl->reg_offsets[BRCMNAND_CS1_BASE];
-	u8 cs_offs;
-
-	if (cs == 0 && ctrl->cs0_offsets)
-		cs_offs = ctrl->cs0_offsets[reg];
-	else
-		cs_offs = ctrl->cs_offsets[reg];
-
-	if (cs && offs_cs1)
-		return offs_cs1 + (cs - 1) * ctrl->reg_spacing + cs_offs;
-
-	return offs_cs0 + cs * ctrl->reg_spacing + cs_offs;
-}
-
-static inline u32 brcmnand_count_corrected(struct brcmnand_controller *ctrl)
-{
-	if (ctrl->nand_version < 0x0600)
-		return 1;
-	return brcmnand_read_reg(ctrl, BRCMNAND_CORR_COUNT);
-}
-
-static void brcmnand_wr_corr_thresh(struct brcmnand_host *host, u8 val)
-{
-	struct brcmnand_controller *ctrl = host->ctrl;
-	unsigned int shift = 0, bits;
-	enum brcmnand_reg reg = BRCMNAND_CORR_THRESHOLD;
-	int cs = host->cs;
-
-	if (ctrl->nand_version >= 0x0702)
-		bits = 7;
-	else if (ctrl->nand_version >= 0x0600)
-		bits = 6;
-	else if (ctrl->nand_version >= 0x0500)
-		bits = 5;
-	else
-		bits = 4;
-
-	if (ctrl->nand_version >= 0x0702) {
-		if (cs >= 4)
-			reg = BRCMNAND_CORR_THRESHOLD_EXT;
-		shift = (cs % 4) * bits;
-	} else if (ctrl->nand_version >= 0x0600) {
-		if (cs >= 5)
-			reg = BRCMNAND_CORR_THRESHOLD_EXT;
-		shift = (cs % 5) * bits;
-	}
-	brcmnand_rmw_reg(ctrl, reg, (bits - 1) << shift, shift, val);
-}
-
-static inline int brcmnand_cmd_shift(struct brcmnand_controller *ctrl)
-{
-	if (ctrl->nand_version < 0x0602)
-		return 24;
-	return 0;
-}
-
-/***********************************************************************
- * NAND ACC CONTROL bitfield
- *
- * Some bits have remained constant throughout hardware revision, while
- * others have shifted around.
- ***********************************************************************/
-
-/* Constant for all versions (where supported) */
-enum {
-	/* See BRCMNAND_HAS_CACHE_MODE */
-	ACC_CONTROL_CACHE_MODE				= BIT(22),
-
-	/* See BRCMNAND_HAS_PREFETCH */
-	ACC_CONTROL_PREFETCH				= BIT(23),
-
-	ACC_CONTROL_PAGE_HIT				= BIT(24),
-	ACC_CONTROL_WR_PREEMPT				= BIT(25),
-	ACC_CONTROL_PARTIAL_PAGE			= BIT(26),
-	ACC_CONTROL_RD_ERASED				= BIT(27),
-	ACC_CONTROL_FAST_PGM_RDIN			= BIT(28),
-	ACC_CONTROL_WR_ECC				= BIT(30),
-	ACC_CONTROL_RD_ECC				= BIT(31),
-};
-
-static inline u32 brcmnand_spare_area_mask(struct brcmnand_controller *ctrl)
-{
-	if (ctrl->nand_version >= 0x0702)
-		return GENMASK(7, 0);
-	else if (ctrl->nand_version >= 0x0600)
-		return GENMASK(6, 0);
-	else
-		return GENMASK(5, 0);
-}
-
-#define NAND_ACC_CONTROL_ECC_SHIFT	16
-#define NAND_ACC_CONTROL_ECC_EXT_SHIFT	13
-
-static inline u32 brcmnand_ecc_level_mask(struct brcmnand_controller *ctrl)
-{
-	u32 mask = (ctrl->nand_version >= 0x0600) ? 0x1f : 0x0f;
-
-	mask <<= NAND_ACC_CONTROL_ECC_SHIFT;
-
-	/* v7.2 includes additional ECC levels */
-	if (ctrl->nand_version >= 0x0702)
-		mask |= 0x7 << NAND_ACC_CONTROL_ECC_EXT_SHIFT;
-
-	return mask;
-}
-
-static void brcmnand_set_ecc_enabled(struct brcmnand_host *host, int en)
-{
-	struct brcmnand_controller *ctrl = host->ctrl;
-	u16 offs = brcmnand_cs_offset(ctrl, host->cs, BRCMNAND_CS_ACC_CONTROL);
-	u32 acc_control = nand_readreg(ctrl, offs);
-	u32 ecc_flags = ACC_CONTROL_WR_ECC | ACC_CONTROL_RD_ECC;
-
-	if (en) {
-		acc_control |= ecc_flags; /* enable RD/WR ECC */
-		acc_control |= host->hwcfg.ecc_level
-			       << NAND_ACC_CONTROL_ECC_SHIFT;
-	} else {
-		acc_control &= ~ecc_flags; /* disable RD/WR ECC */
-		acc_control &= ~brcmnand_ecc_level_mask(ctrl);
-	}
-
-	nand_writereg(ctrl, offs, acc_control);
-}
-
-static inline int brcmnand_sector_1k_shift(struct brcmnand_controller *ctrl)
-{
-	if (ctrl->nand_version >= 0x0702)
-		return 9;
-	else if (ctrl->nand_version >= 0x0600)
-		return 7;
-	else if (ctrl->nand_version >= 0x0500)
-		return 6;
-	else
-		return -1;
-}
-
-static int brcmnand_get_sector_size_1k(struct brcmnand_host *host)
-{
-	struct brcmnand_controller *ctrl = host->ctrl;
-	int shift = brcmnand_sector_1k_shift(ctrl);
-	u16 acc_control_offs = brcmnand_cs_offset(ctrl, host->cs,
-						  BRCMNAND_CS_ACC_CONTROL);
-
-	if (shift < 0)
-		return 0;
-
-	return (nand_readreg(ctrl, acc_control_offs) >> shift) & 0x1;
-}
-
-static void brcmnand_set_sector_size_1k(struct brcmnand_host *host, int val)
-{
-	struct brcmnand_controller *ctrl = host->ctrl;
-	int shift = brcmnand_sector_1k_shift(ctrl);
-	u16 acc_control_offs = brcmnand_cs_offset(ctrl, host->cs,
-						  BRCMNAND_CS_ACC_CONTROL);
-	u32 tmp;
-
-	if (shift < 0)
-		return;
-
-	tmp = nand_readreg(ctrl, acc_control_offs);
-	tmp &= ~(1 << shift);
-	tmp |= (!!val) << shift;
-	nand_writereg(ctrl, acc_control_offs, tmp);
-}
-
-/***********************************************************************
- * CS_NAND_SELECT
- ***********************************************************************/
-
-enum {
-	CS_SELECT_NAND_WP			= BIT(29),
-	CS_SELECT_AUTO_DEVICE_ID_CFG		= BIT(30),
-};
-
-static int bcmnand_ctrl_poll_status(struct brcmnand_controller *ctrl,
-				    u32 mask, u32 expected_val,
-				    unsigned long timeout_ms)
-{
-	unsigned long limit;
-	u32 val;
-
-	if (!timeout_ms)
-		timeout_ms = NAND_POLL_STATUS_TIMEOUT_MS;
-
-	limit = jiffies + msecs_to_jiffies(timeout_ms);
-	do {
-		val = brcmnand_read_reg(ctrl, BRCMNAND_INTFC_STATUS);
-		if ((val & mask) == expected_val)
-			return 0;
-
-		cpu_relax();
-	} while (time_after(limit, jiffies));
-
-	dev_warn(ctrl->dev, "timeout on status poll (expected %x got %x)\n",
-		 expected_val, val & mask);
-
-	return -ETIMEDOUT;
-}
-
-static inline void brcmnand_set_wp(struct brcmnand_controller *ctrl, bool en)
-{
-	u32 val = en ? CS_SELECT_NAND_WP : 0;
-
-	brcmnand_rmw_reg(ctrl, BRCMNAND_CS_SELECT, CS_SELECT_NAND_WP, 0, val);
-}
-
-/***********************************************************************
- * Flash DMA
- ***********************************************************************/
-
-enum flash_dma_reg {
-	FLASH_DMA_REVISION		= 0x00,
-	FLASH_DMA_FIRST_DESC		= 0x04,
-	FLASH_DMA_FIRST_DESC_EXT	= 0x08,
-	FLASH_DMA_CTRL			= 0x0c,
-	FLASH_DMA_MODE			= 0x10,
-	FLASH_DMA_STATUS		= 0x14,
-	FLASH_DMA_INTERRUPT_DESC	= 0x18,
-	FLASH_DMA_INTERRUPT_DESC_EXT	= 0x1c,
-	FLASH_DMA_ERROR_STATUS		= 0x20,
-	FLASH_DMA_CURRENT_DESC		= 0x24,
-	FLASH_DMA_CURRENT_DESC_EXT	= 0x28,
-};
-
-static inline bool has_flash_dma(struct brcmnand_controller *ctrl)
-{
-	return ctrl->flash_dma_base;
-}
-
-static inline bool flash_dma_buf_ok(const void *buf)
-{
-	return buf && !is_vmalloc_addr(buf) &&
-		likely(IS_ALIGNED((uintptr_t)buf, 4));
-}
-
-static inline void flash_dma_writel(struct brcmnand_controller *ctrl, u8 offs,
-				    u32 val)
-{
-	brcmnand_writel(val, ctrl->flash_dma_base + offs);
-}
-
-static inline u32 flash_dma_readl(struct brcmnand_controller *ctrl, u8 offs)
-{
-	return brcmnand_readl(ctrl->flash_dma_base + offs);
-}
-
-/* Low-level operation types: command, address, write, or read */
-enum brcmnand_llop_type {
-	LL_OP_CMD,
-	LL_OP_ADDR,
-	LL_OP_WR,
-	LL_OP_RD,
-};
-
-/***********************************************************************
- * Internal support functions
- ***********************************************************************/
-
-static inline bool is_hamming_ecc(struct brcmnand_controller *ctrl,
-				  struct brcmnand_cfg *cfg)
-{
-	if (ctrl->nand_version <= 0x0701)
-		return cfg->sector_size_1k == 0 && cfg->spare_area_size == 16 &&
-			cfg->ecc_level == 15;
-	else
-		return cfg->sector_size_1k == 0 && ((cfg->spare_area_size == 16 &&
-			cfg->ecc_level == 15) ||
-			(cfg->spare_area_size == 28 && cfg->ecc_level == 16));
-}
-
-/*
- * Set mtd->ooblayout to the appropriate mtd_ooblayout_ops given
- * the layout/configuration.
- * Returns -ERRCODE on failure.
- */
-static int brcmnand_hamming_ooblayout_ecc(struct mtd_info *mtd, int section,
-					  struct mtd_oob_region *oobregion)
-{
-	struct nand_chip *chip = mtd_to_nand(mtd);
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_cfg *cfg = &host->hwcfg;
-	int sas = cfg->spare_area_size << cfg->sector_size_1k;
-	int sectors = cfg->page_size / (512 << cfg->sector_size_1k);
-
-	if (section >= sectors)
-		return -ERANGE;
-
-	oobregion->offset = (section * sas) + 6;
-	oobregion->length = 3;
-
-	return 0;
-}
-
-static int brcmnand_hamming_ooblayout_free(struct mtd_info *mtd, int section,
-					   struct mtd_oob_region *oobregion)
-{
-	struct nand_chip *chip = mtd_to_nand(mtd);
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_cfg *cfg = &host->hwcfg;
-	int sas = cfg->spare_area_size << cfg->sector_size_1k;
-	int sectors = cfg->page_size / (512 << cfg->sector_size_1k);
-
-	if (section >= sectors * 2)
-		return -ERANGE;
-
-	oobregion->offset = (section / 2) * sas;
-
-	if (section & 1) {
-		oobregion->offset += 9;
-		oobregion->length = 7;
-	} else {
-		oobregion->length = 6;
-
-		/* First sector of each page may have BBI */
-		if (!section) {
-			/*
-			 * Small-page NAND use byte 6 for BBI while large-page
-			 * NAND use byte 0.
-			 */
-			if (cfg->page_size > 512)
-				oobregion->offset++;
-			oobregion->length--;
-		}
-	}
-
-	return 0;
-}
-
-static const struct mtd_ooblayout_ops brcmnand_hamming_ooblayout_ops = {
-	.ecc = brcmnand_hamming_ooblayout_ecc,
-	.free = brcmnand_hamming_ooblayout_free,
-};
-
-static int brcmnand_bch_ooblayout_ecc(struct mtd_info *mtd, int section,
-				      struct mtd_oob_region *oobregion)
-{
-	struct nand_chip *chip = mtd_to_nand(mtd);
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_cfg *cfg = &host->hwcfg;
-	int sas = cfg->spare_area_size << cfg->sector_size_1k;
-	int sectors = cfg->page_size / (512 << cfg->sector_size_1k);
-
-	if (section >= sectors)
-		return -ERANGE;
-
-	oobregion->offset = (section * (sas + 1)) - chip->ecc.bytes;
-	oobregion->length = chip->ecc.bytes;
-
-	return 0;
-}
-
-static int brcmnand_bch_ooblayout_free_lp(struct mtd_info *mtd, int section,
-					  struct mtd_oob_region *oobregion)
-{
-	struct nand_chip *chip = mtd_to_nand(mtd);
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_cfg *cfg = &host->hwcfg;
-	int sas = cfg->spare_area_size << cfg->sector_size_1k;
-	int sectors = cfg->page_size / (512 << cfg->sector_size_1k);
-
-	if (section >= sectors)
-		return -ERANGE;
-
-	if (sas <= chip->ecc.bytes)
-		return 0;
-
-	oobregion->offset = section * sas;
-	oobregion->length = sas - chip->ecc.bytes;
-
-	if (!section) {
-		oobregion->offset++;
-		oobregion->length--;
-	}
-
-	return 0;
-}
-
-static int brcmnand_bch_ooblayout_free_sp(struct mtd_info *mtd, int section,
-					  struct mtd_oob_region *oobregion)
-{
-	struct nand_chip *chip = mtd_to_nand(mtd);
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_cfg *cfg = &host->hwcfg;
-	int sas = cfg->spare_area_size << cfg->sector_size_1k;
-
-	if (section > 1 || sas - chip->ecc.bytes < 6 ||
-	    (section && sas - chip->ecc.bytes == 6))
-		return -ERANGE;
-
-	if (!section) {
-		oobregion->offset = 0;
-		oobregion->length = 5;
-	} else {
-		oobregion->offset = 6;
-		oobregion->length = sas - chip->ecc.bytes - 6;
-	}
-
-	return 0;
-}
-
-static const struct mtd_ooblayout_ops brcmnand_bch_lp_ooblayout_ops = {
-	.ecc = brcmnand_bch_ooblayout_ecc,
-	.free = brcmnand_bch_ooblayout_free_lp,
-};
-
-static const struct mtd_ooblayout_ops brcmnand_bch_sp_ooblayout_ops = {
-	.ecc = brcmnand_bch_ooblayout_ecc,
-	.free = brcmnand_bch_ooblayout_free_sp,
-};
-
-static int brcmstb_choose_ecc_layout(struct brcmnand_host *host)
-{
-	struct brcmnand_cfg *p = &host->hwcfg;
-	struct mtd_info *mtd = nand_to_mtd(&host->chip);
-	struct nand_ecc_ctrl *ecc = &host->chip.ecc;
-	unsigned int ecc_level = p->ecc_level;
-	int sas = p->spare_area_size << p->sector_size_1k;
-	int sectors = p->page_size / (512 << p->sector_size_1k);
-
-	if (p->sector_size_1k)
-		ecc_level <<= 1;
-
-	if (is_hamming_ecc(host->ctrl, p)) {
-		ecc->bytes = 3 * sectors;
-		mtd_set_ooblayout(mtd, &brcmnand_hamming_ooblayout_ops);
-		return 0;
-	}
-
-	/*
-	 * CONTROLLER_VERSION:
-	 *   < v5.0: ECC_REQ = ceil(BCH_T * 13/8)
-	 *  >= v5.0: ECC_REQ = ceil(BCH_T * 14/8)
-	 * But we will just be conservative.
-	 */
-	ecc->bytes = DIV_ROUND_UP(ecc_level * 14, 8);
-	if (p->page_size == 512)
-		mtd_set_ooblayout(mtd, &brcmnand_bch_sp_ooblayout_ops);
-	else
-		mtd_set_ooblayout(mtd, &brcmnand_bch_lp_ooblayout_ops);
-
-	if (ecc->bytes >= sas) {
-		dev_err(&host->pdev->dev,
-			"error: ECC too large for OOB (ECC bytes %d, spare sector %d)\n",
-			ecc->bytes, sas);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static void brcmnand_wp(struct mtd_info *mtd, int wp)
-{
-	struct nand_chip *chip = mtd_to_nand(mtd);
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_controller *ctrl = host->ctrl;
-
-	if ((ctrl->features & BRCMNAND_HAS_WP) && wp_on == 1) {
-		static int old_wp = -1;
-		int ret;
-
-		if (old_wp != wp) {
-			dev_dbg(ctrl->dev, "WP %s\n", wp ? "on" : "off");
-			old_wp = wp;
-		}
-
-		/*
-		 * make sure ctrl/flash ready before and after
-		 * changing state of #WP pin
-		 */
-		ret = bcmnand_ctrl_poll_status(ctrl, NAND_CTRL_RDY |
-					       NAND_STATUS_READY,
-					       NAND_CTRL_RDY |
-					       NAND_STATUS_READY, 0);
-		if (ret)
-			return;
-
-		brcmnand_set_wp(ctrl, wp);
-		nand_status_op(chip, NULL);
-		/* NAND_STATUS_WP 0x00 = protected, 0x80 = not protected */
-		ret = bcmnand_ctrl_poll_status(ctrl,
-					       NAND_CTRL_RDY |
-					       NAND_STATUS_READY |
-					       NAND_STATUS_WP,
-					       NAND_CTRL_RDY |
-					       NAND_STATUS_READY |
-					       (wp ? 0 : NAND_STATUS_WP), 0);
-
-		if (ret)
-			dev_err_ratelimited(&host->pdev->dev,
-					    "nand #WP expected %s\n",
-					    wp ? "on" : "off");
-	}
-}
-
-/* Helper functions for reading and writing OOB registers */
-static inline u8 oob_reg_read(struct brcmnand_controller *ctrl, u32 offs)
-{
-	u16 offset0, offset10, reg_offs;
-
-	offset0 = ctrl->reg_offsets[BRCMNAND_OOB_READ_BASE];
-	offset10 = ctrl->reg_offsets[BRCMNAND_OOB_READ_10_BASE];
-
-	if (offs >= ctrl->max_oob)
-		return 0x77;
-
-	if (offs >= 16 && offset10)
-		reg_offs = offset10 + ((offs - 0x10) & ~0x03);
-	else
-		reg_offs = offset0 + (offs & ~0x03);
-
-	return nand_readreg(ctrl, reg_offs) >> (24 - ((offs & 0x03) << 3));
-}
-
-static inline void oob_reg_write(struct brcmnand_controller *ctrl, u32 offs,
-				 u32 data)
-{
-	u16 offset0, offset10, reg_offs;
-
-	offset0 = ctrl->reg_offsets[BRCMNAND_OOB_WRITE_BASE];
-	offset10 = ctrl->reg_offsets[BRCMNAND_OOB_WRITE_10_BASE];
-
-	if (offs >= ctrl->max_oob)
-		return;
-
-	if (offs >= 16 && offset10)
-		reg_offs = offset10 + ((offs - 0x10) & ~0x03);
-	else
-		reg_offs = offset0 + (offs & ~0x03);
-
-	nand_writereg(ctrl, reg_offs, data);
-}
-
-/*
- * read_oob_from_regs - read data from OOB registers
- * @ctrl: NAND controller
- * @i: sub-page sector index
- * @oob: buffer to read to
- * @sas: spare area sector size (i.e., OOB size per FLASH_CACHE)
- * @sector_1k: 1 for 1KiB sectors, 0 for 512B, other values are illegal
- */
-static int read_oob_from_regs(struct brcmnand_controller *ctrl, int i, u8 *oob,
-			      int sas, int sector_1k)
-{
-	int tbytes = sas << sector_1k;
-	int j;
-
-	/* Adjust OOB values for 1K sector size */
-	if (sector_1k && (i & 0x01))
-		tbytes = max(0, tbytes - (int)ctrl->max_oob);
-	tbytes = min_t(int, tbytes, ctrl->max_oob);
-
-	for (j = 0; j < tbytes; j++)
-		oob[j] = oob_reg_read(ctrl, j);
-	return tbytes;
-}
-
-/*
- * write_oob_to_regs - write data to OOB registers
- * @i: sub-page sector index
- * @oob: buffer to write from
- * @sas: spare area sector size (i.e., OOB size per FLASH_CACHE)
- * @sector_1k: 1 for 1KiB sectors, 0 for 512B, other values are illegal
- */
-static int write_oob_to_regs(struct brcmnand_controller *ctrl, int i,
-			     const u8 *oob, int sas, int sector_1k)
-{
-	int tbytes = sas << sector_1k;
-	int j;
-
-	/* Adjust OOB values for 1K sector size */
-	if (sector_1k && (i & 0x01))
-		tbytes = max(0, tbytes - (int)ctrl->max_oob);
-	tbytes = min_t(int, tbytes, ctrl->max_oob);
-
-	for (j = 0; j < tbytes; j += 4)
-		oob_reg_write(ctrl, j,
-				(oob[j + 0] << 24) |
-				(oob[j + 1] << 16) |
-				(oob[j + 2] <<  8) |
-				(oob[j + 3] <<  0));
-	return tbytes;
-}
-
-static irqreturn_t brcmnand_ctlrdy_irq(int irq, void *data)
-{
-	struct brcmnand_controller *ctrl = data;
-
-	/* Discard all NAND_CTLRDY interrupts during DMA */
-	if (ctrl->dma_pending)
-		return IRQ_HANDLED;
-
-	complete(&ctrl->done);
-	return IRQ_HANDLED;
-}
-
-/* Handle SoC-specific interrupt hardware */
-static irqreturn_t brcmnand_irq(int irq, void *data)
-{
-	struct brcmnand_controller *ctrl = data;
-
-	if (ctrl->soc->ctlrdy_ack(ctrl->soc))
-		return brcmnand_ctlrdy_irq(irq, data);
-
-	return IRQ_NONE;
-}
-
-static irqreturn_t brcmnand_dma_irq(int irq, void *data)
-{
-	struct brcmnand_controller *ctrl = data;
-
-	complete(&ctrl->dma_done);
-
-	return IRQ_HANDLED;
-}
-
-static void brcmnand_send_cmd(struct brcmnand_host *host, int cmd)
-{
-	struct brcmnand_controller *ctrl = host->ctrl;
-	int ret;
-
-	dev_dbg(ctrl->dev, "send native cmd %d addr_lo 0x%x\n", cmd,
-		brcmnand_read_reg(ctrl, BRCMNAND_CMD_ADDRESS));
-	BUG_ON(ctrl->cmd_pending != 0);
-	ctrl->cmd_pending = cmd;
-
-	ret = bcmnand_ctrl_poll_status(ctrl, NAND_CTRL_RDY, NAND_CTRL_RDY, 0);
-	WARN_ON(ret);
-
-	mb(); /* flush previous writes */
-	brcmnand_write_reg(ctrl, BRCMNAND_CMD_START,
-			   cmd << brcmnand_cmd_shift(ctrl));
-}
-
-/***********************************************************************
- * NAND MTD API: read/program/erase
- ***********************************************************************/
-
-static void brcmnand_cmd_ctrl(struct mtd_info *mtd, int dat,
-	unsigned int ctrl)
-{
-	/* intentionally left blank */
-}
-
-static int brcmnand_waitfunc(struct mtd_info *mtd, struct nand_chip *this)
-{
-	struct nand_chip *chip = mtd_to_nand(mtd);
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_controller *ctrl = host->ctrl;
-	unsigned long timeo = msecs_to_jiffies(100);
-
-	dev_dbg(ctrl->dev, "wait on native cmd %d\n", ctrl->cmd_pending);
-	if (ctrl->cmd_pending &&
-			wait_for_completion_timeout(&ctrl->done, timeo) <= 0) {
-		u32 cmd = brcmnand_read_reg(ctrl, BRCMNAND_CMD_START)
-					>> brcmnand_cmd_shift(ctrl);
-
-		dev_err_ratelimited(ctrl->dev,
-			"timeout waiting for command %#02x\n", cmd);
-		dev_err_ratelimited(ctrl->dev, "intfc status %08x\n",
-			brcmnand_read_reg(ctrl, BRCMNAND_INTFC_STATUS));
-	}
-	ctrl->cmd_pending = 0;
-	return brcmnand_read_reg(ctrl, BRCMNAND_INTFC_STATUS) &
-				 INTFC_FLASH_STATUS;
-}
-
-enum {
-	LLOP_RE				= BIT(16),
-	LLOP_WE				= BIT(17),
-	LLOP_ALE			= BIT(18),
-	LLOP_CLE			= BIT(19),
-	LLOP_RETURN_IDLE		= BIT(31),
-
-	LLOP_DATA_MASK			= GENMASK(15, 0),
-};
-
-static int brcmnand_low_level_op(struct brcmnand_host *host,
-				 enum brcmnand_llop_type type, u32 data,
-				 bool last_op)
-{
-	struct mtd_info *mtd = nand_to_mtd(&host->chip);
-	struct nand_chip *chip = &host->chip;
-	struct brcmnand_controller *ctrl = host->ctrl;
-	u32 tmp;
-
-	tmp = data & LLOP_DATA_MASK;
-	switch (type) {
-	case LL_OP_CMD:
-		tmp |= LLOP_WE | LLOP_CLE;
-		break;
-	case LL_OP_ADDR:
-		/* WE | ALE */
-		tmp |= LLOP_WE | LLOP_ALE;
-		break;
-	case LL_OP_WR:
-		/* WE */
-		tmp |= LLOP_WE;
-		break;
-	case LL_OP_RD:
-		/* RE */
-		tmp |= LLOP_RE;
-		break;
-	}
-	if (last_op)
-		/* RETURN_IDLE */
-		tmp |= LLOP_RETURN_IDLE;
-
-	dev_dbg(ctrl->dev, "ll_op cmd %#x\n", tmp);
-
-	brcmnand_write_reg(ctrl, BRCMNAND_LL_OP, tmp);
-	(void)brcmnand_read_reg(ctrl, BRCMNAND_LL_OP);
-
-	brcmnand_send_cmd(host, CMD_LOW_LEVEL_OP);
-	return brcmnand_waitfunc(mtd, chip);
-}
-
-static void brcmnand_cmdfunc(struct mtd_info *mtd, unsigned command,
-			     int column, int page_addr)
-{
-	struct nand_chip *chip = mtd_to_nand(mtd);
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_controller *ctrl = host->ctrl;
-	u64 addr = (u64)page_addr << chip->page_shift;
-	int native_cmd = 0;
-
-	if (command == NAND_CMD_READID || command == NAND_CMD_PARAM ||
-			command == NAND_CMD_RNDOUT)
-		addr = (u64)column;
-	/* Avoid propagating a negative, don't-care address */
-	else if (page_addr < 0)
-		addr = 0;
-
-	dev_dbg(ctrl->dev, "cmd 0x%x addr 0x%llx\n", command,
-		(unsigned long long)addr);
-
-	host->last_cmd = command;
-	host->last_byte = 0;
-	host->last_addr = addr;
-
-	switch (command) {
-	case NAND_CMD_RESET:
-		native_cmd = CMD_FLASH_RESET;
-		break;
-	case NAND_CMD_STATUS:
-		native_cmd = CMD_STATUS_READ;
-		break;
-	case NAND_CMD_READID:
-		native_cmd = CMD_DEVICE_ID_READ;
-		break;
-	case NAND_CMD_READOOB:
-		native_cmd = CMD_SPARE_AREA_READ;
-		break;
-	case NAND_CMD_ERASE1:
-		native_cmd = CMD_BLOCK_ERASE;
-		brcmnand_wp(mtd, 0);
-		break;
-	case NAND_CMD_PARAM:
-		native_cmd = CMD_PARAMETER_READ;
-		break;
-	case NAND_CMD_SET_FEATURES:
-	case NAND_CMD_GET_FEATURES:
-		brcmnand_low_level_op(host, LL_OP_CMD, command, false);
-		brcmnand_low_level_op(host, LL_OP_ADDR, column, false);
-		break;
-	case NAND_CMD_RNDOUT:
-		native_cmd = CMD_PARAMETER_CHANGE_COL;
-		addr &= ~((u64)(FC_BYTES - 1));
-		/*
-		 * HW quirk: PARAMETER_CHANGE_COL requires SECTOR_SIZE_1K=0
-		 * NB: hwcfg.sector_size_1k may not be initialized yet
-		 */
-		if (brcmnand_get_sector_size_1k(host)) {
-			host->hwcfg.sector_size_1k =
-				brcmnand_get_sector_size_1k(host);
-			brcmnand_set_sector_size_1k(host, 0);
-		}
-		break;
-	}
-
-	if (!native_cmd)
-		return;
-
-	brcmnand_write_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS,
-		(host->cs << 16) | ((addr >> 32) & 0xffff));
-	(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS);
-	brcmnand_write_reg(ctrl, BRCMNAND_CMD_ADDRESS, lower_32_bits(addr));
-	(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_ADDRESS);
-
-	brcmnand_send_cmd(host, native_cmd);
-	brcmnand_waitfunc(mtd, chip);
-
-	if (native_cmd == CMD_PARAMETER_READ ||
-			native_cmd == CMD_PARAMETER_CHANGE_COL) {
-		/* Copy flash cache word-wise */
-		u32 *flash_cache = (u32 *)ctrl->flash_cache;
-		int i;
-
-		brcmnand_soc_data_bus_prepare(ctrl->soc, true);
-
-		/*
-		 * Must cache the FLASH_CACHE now, since changes in
-		 * SECTOR_SIZE_1K may invalidate it
-		 */
-		for (i = 0; i < FC_WORDS; i++)
-			/*
-			 * Flash cache is big endian for parameter pages, at
-			 * least on STB SoCs
-			 */
-			flash_cache[i] = be32_to_cpu(brcmnand_read_fc(ctrl, i));
-
-		brcmnand_soc_data_bus_unprepare(ctrl->soc, true);
-
-		/* Cleanup from HW quirk: restore SECTOR_SIZE_1K */
-		if (host->hwcfg.sector_size_1k)
-			brcmnand_set_sector_size_1k(host,
-						    host->hwcfg.sector_size_1k);
-	}
-
-	/* Re-enable protection is necessary only after erase */
-	if (command == NAND_CMD_ERASE1)
-		brcmnand_wp(mtd, 1);
-}
-
-static uint8_t brcmnand_read_byte(struct mtd_info *mtd)
-{
-	struct nand_chip *chip = mtd_to_nand(mtd);
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_controller *ctrl = host->ctrl;
-	uint8_t ret = 0;
-	int addr, offs;
-
-	switch (host->last_cmd) {
-	case NAND_CMD_READID:
-		if (host->last_byte < 4)
-			ret = brcmnand_read_reg(ctrl, BRCMNAND_ID) >>
-				(24 - (host->last_byte << 3));
-		else if (host->last_byte < 8)
-			ret = brcmnand_read_reg(ctrl, BRCMNAND_ID_EXT) >>
-				(56 - (host->last_byte << 3));
-		break;
-
-	case NAND_CMD_READOOB:
-		ret = oob_reg_read(ctrl, host->last_byte);
-		break;
-
-	case NAND_CMD_STATUS:
-		ret = brcmnand_read_reg(ctrl, BRCMNAND_INTFC_STATUS) &
-					INTFC_FLASH_STATUS;
-		if (wp_on) /* hide WP status */
-			ret |= NAND_STATUS_WP;
-		break;
-
-	case NAND_CMD_PARAM:
-	case NAND_CMD_RNDOUT:
-		addr = host->last_addr + host->last_byte;
-		offs = addr & (FC_BYTES - 1);
-
-		/* At FC_BYTES boundary, switch to next column */
-		if (host->last_byte > 0 && offs == 0)
-			nand_change_read_column_op(chip, addr, NULL, 0, false);
-
-		ret = ctrl->flash_cache[offs];
-		break;
-	case NAND_CMD_GET_FEATURES:
-		if (host->last_byte >= ONFI_SUBFEATURE_PARAM_LEN) {
-			ret = 0;
-		} else {
-			bool last = host->last_byte ==
-				ONFI_SUBFEATURE_PARAM_LEN - 1;
-			brcmnand_low_level_op(host, LL_OP_RD, 0, last);
-			ret = brcmnand_read_reg(ctrl, BRCMNAND_LL_RDATA) & 0xff;
-		}
-	}
-
-	dev_dbg(ctrl->dev, "read byte = 0x%02x\n", ret);
-	host->last_byte++;
-
-	return ret;
-}
-
-static void brcmnand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
-{
-	int i;
-
-	for (i = 0; i < len; i++, buf++)
-		*buf = brcmnand_read_byte(mtd);
-}
-
-static void brcmnand_write_buf(struct mtd_info *mtd, const uint8_t *buf,
-				   int len)
-{
-	int i;
-	struct nand_chip *chip = mtd_to_nand(mtd);
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-
-	switch (host->last_cmd) {
-	case NAND_CMD_SET_FEATURES:
-		for (i = 0; i < len; i++)
-			brcmnand_low_level_op(host, LL_OP_WR, buf[i],
-						  (i + 1) == len);
-		break;
-	default:
-		BUG();
-		break;
-	}
-}
-
-/**
- * Construct a FLASH_DMA descriptor as part of a linked list. You must know the
- * following ahead of time:
- *  - Is this descriptor the beginning or end of a linked list?
- *  - What is the (DMA) address of the next descriptor in the linked list?
- */
-static int brcmnand_fill_dma_desc(struct brcmnand_host *host,
-				  struct brcm_nand_dma_desc *desc, u64 addr,
-				  dma_addr_t buf, u32 len, u8 dma_cmd,
-				  bool begin, bool end,
-				  dma_addr_t next_desc)
-{
-	memset(desc, 0, sizeof(*desc));
-	/* Descriptors are written in native byte order (wordwise) */
-	desc->next_desc = lower_32_bits(next_desc);
-	desc->next_desc_ext = upper_32_bits(next_desc);
-	desc->cmd_irq = (dma_cmd << 24) |
-		(end ? (0x03 << 8) : 0) | /* IRQ | STOP */
-		(!!begin) | ((!!end) << 1); /* head, tail */
-#ifdef CONFIG_CPU_BIG_ENDIAN
-	desc->cmd_irq |= 0x01 << 12;
-#endif
-	desc->dram_addr = lower_32_bits(buf);
-	desc->dram_addr_ext = upper_32_bits(buf);
-	desc->tfr_len = len;
-	desc->total_len = len;
-	desc->flash_addr = lower_32_bits(addr);
-	desc->flash_addr_ext = upper_32_bits(addr);
-	desc->cs = host->cs;
-	desc->status_valid = 0x01;
-	return 0;
-}
-
-/**
- * Kick the FLASH_DMA engine, with a given DMA descriptor
- */
-static void brcmnand_dma_run(struct brcmnand_host *host, dma_addr_t desc)
-{
-	struct brcmnand_controller *ctrl = host->ctrl;
-	unsigned long timeo = msecs_to_jiffies(100);
-
-	flash_dma_writel(ctrl, FLASH_DMA_FIRST_DESC, lower_32_bits(desc));
-	(void)flash_dma_readl(ctrl, FLASH_DMA_FIRST_DESC);
-	flash_dma_writel(ctrl, FLASH_DMA_FIRST_DESC_EXT, upper_32_bits(desc));
-	(void)flash_dma_readl(ctrl, FLASH_DMA_FIRST_DESC_EXT);
-
-	/* Start FLASH_DMA engine */
-	ctrl->dma_pending = true;
-	mb(); /* flush previous writes */
-	flash_dma_writel(ctrl, FLASH_DMA_CTRL, 0x03); /* wake | run */
-
-	if (wait_for_completion_timeout(&ctrl->dma_done, timeo) <= 0) {
-		dev_err(ctrl->dev,
-				"timeout waiting for DMA; status %#x, error status %#x\n",
-				flash_dma_readl(ctrl, FLASH_DMA_STATUS),
-				flash_dma_readl(ctrl, FLASH_DMA_ERROR_STATUS));
-	}
-	ctrl->dma_pending = false;
-	flash_dma_writel(ctrl, FLASH_DMA_CTRL, 0); /* force stop */
-}
-
-static int brcmnand_dma_trans(struct brcmnand_host *host, u64 addr, u32 *buf,
-			      u32 len, u8 dma_cmd)
-{
-	struct brcmnand_controller *ctrl = host->ctrl;
-	dma_addr_t buf_pa;
-	int dir = dma_cmd == CMD_PAGE_READ ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
-
-	buf_pa = dma_map_single(ctrl->dev, buf, len, dir);
-	if (dma_mapping_error(ctrl->dev, buf_pa)) {
-		dev_err(ctrl->dev, "unable to map buffer for DMA\n");
-		return -ENOMEM;
-	}
-
-	brcmnand_fill_dma_desc(host, ctrl->dma_desc, addr, buf_pa, len,
-				   dma_cmd, true, true, 0);
-
-	brcmnand_dma_run(host, ctrl->dma_pa);
-
-	dma_unmap_single(ctrl->dev, buf_pa, len, dir);
-
-	if (ctrl->dma_desc->status_valid & FLASH_DMA_ECC_ERROR)
-		return -EBADMSG;
-	else if (ctrl->dma_desc->status_valid & FLASH_DMA_CORR_ERROR)
-		return -EUCLEAN;
-
-	return 0;
-}
-
-/*
- * Assumes proper CS is already set
- */
-static int brcmnand_read_by_pio(struct mtd_info *mtd, struct nand_chip *chip,
-				u64 addr, unsigned int trans, u32 *buf,
-				u8 *oob, u64 *err_addr)
-{
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_controller *ctrl = host->ctrl;
-	int i, j, ret = 0;
-
-	/* Clear error addresses */
-	brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_ADDR, 0);
-	brcmnand_write_reg(ctrl, BRCMNAND_CORR_ADDR, 0);
-	brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_EXT_ADDR, 0);
-	brcmnand_write_reg(ctrl, BRCMNAND_CORR_EXT_ADDR, 0);
-
-	brcmnand_write_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS,
-			(host->cs << 16) | ((addr >> 32) & 0xffff));
-	(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS);
-
-	for (i = 0; i < trans; i++, addr += FC_BYTES) {
-		brcmnand_write_reg(ctrl, BRCMNAND_CMD_ADDRESS,
-				   lower_32_bits(addr));
-		(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_ADDRESS);
-		/* SPARE_AREA_READ does not use ECC, so just use PAGE_READ */
-		brcmnand_send_cmd(host, CMD_PAGE_READ);
-		brcmnand_waitfunc(mtd, chip);
-
-		if (likely(buf)) {
-			brcmnand_soc_data_bus_prepare(ctrl->soc, false);
-
-			for (j = 0; j < FC_WORDS; j++, buf++)
-				*buf = brcmnand_read_fc(ctrl, j);
-
-			brcmnand_soc_data_bus_unprepare(ctrl->soc, false);
-		}
-
-		if (oob)
-			oob += read_oob_from_regs(ctrl, i, oob,
-					mtd->oobsize / trans,
-					host->hwcfg.sector_size_1k);
-
-		if (!ret) {
-			*err_addr = brcmnand_read_reg(ctrl,
-					BRCMNAND_UNCORR_ADDR) |
-				((u64)(brcmnand_read_reg(ctrl,
-						BRCMNAND_UNCORR_EXT_ADDR)
-					& 0xffff) << 32);
-			if (*err_addr)
-				ret = -EBADMSG;
-		}
-
-		if (!ret) {
-			*err_addr = brcmnand_read_reg(ctrl,
-					BRCMNAND_CORR_ADDR) |
-				((u64)(brcmnand_read_reg(ctrl,
-						BRCMNAND_CORR_EXT_ADDR)
-					& 0xffff) << 32);
-			if (*err_addr)
-				ret = -EUCLEAN;
-		}
-	}
-
-	return ret;
-}
-
-/*
- * Check a page to see if it is erased (w/ bitflips) after an uncorrectable ECC
- * error
- *
- * Because the HW ECC signals an ECC error if an erase paged has even a single
- * bitflip, we must check each ECC error to see if it is actually an erased
- * page with bitflips, not a truly corrupted page.
- *
- * On a real error, return a negative error code (-EBADMSG for ECC error), and
- * buf will contain raw data.
- * Otherwise, buf gets filled with 0xffs and return the maximum number of
- * bitflips-per-ECC-sector to the caller.
- *
- */
-static int brcmstb_nand_verify_erased_page(struct mtd_info *mtd,
-		  struct nand_chip *chip, void *buf, u64 addr)
-{
-	int i, sas;
-	void *oob = chip->oob_poi;
-	int bitflips = 0;
-	int page = addr >> chip->page_shift;
-	int ret;
-
-	if (!buf) {
-		buf = chip->data_buf;
-		/* Invalidate page cache */
-		chip->pagebuf = -1;
-	}
-
-	sas = mtd->oobsize / chip->ecc.steps;
-
-	/* read without ecc for verification */
-	ret = chip->ecc.read_page_raw(mtd, chip, buf, true, page);
-	if (ret)
-		return ret;
-
-	for (i = 0; i < chip->ecc.steps; i++, oob += sas) {
-		ret = nand_check_erased_ecc_chunk(buf, chip->ecc.size,
-						  oob, sas, NULL, 0,
-						  chip->ecc.strength);
-		if (ret < 0)
-			return ret;
-
-		bitflips = max(bitflips, ret);
-	}
-
-	return bitflips;
-}
-
-static int brcmnand_read(struct mtd_info *mtd, struct nand_chip *chip,
-			 u64 addr, unsigned int trans, u32 *buf, u8 *oob)
-{
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_controller *ctrl = host->ctrl;
-	u64 err_addr = 0;
-	int err;
-	bool retry = true;
-
-	dev_dbg(ctrl->dev, "read %llx -> %p\n", (unsigned long long)addr, buf);
-
-try_dmaread:
-	brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_COUNT, 0);
-
-	if (has_flash_dma(ctrl) && !oob && flash_dma_buf_ok(buf)) {
-		err = brcmnand_dma_trans(host, addr, buf, trans * FC_BYTES,
-					     CMD_PAGE_READ);
-		if (err) {
-			if (mtd_is_bitflip_or_eccerr(err))
-				err_addr = addr;
-			else
-				return -EIO;
-		}
-	} else {
-		if (oob)
-			memset(oob, 0x99, mtd->oobsize);
-
-		err = brcmnand_read_by_pio(mtd, chip, addr, trans, buf,
-					       oob, &err_addr);
-	}
-
-	if (mtd_is_eccerr(err)) {
-		/*
-		 * On controller version and 7.0, 7.1 , DMA read after a
-		 * prior PIO read that reported uncorrectable error,
-		 * the DMA engine captures this error following DMA read
-		 * cleared only on subsequent DMA read, so just retry once
-		 * to clear a possible false error reported for current DMA
-		 * read
-		 */
-		if ((ctrl->nand_version == 0x0700) ||
-		    (ctrl->nand_version == 0x0701)) {
-			if (retry) {
-				retry = false;
-				goto try_dmaread;
-			}
-		}
-
-		/*
-		 * Controller version 7.2 has hw encoder to detect erased page
-		 * bitflips, apply sw verification for older controllers only
-		 */
-		if (ctrl->nand_version < 0x0702) {
-			err = brcmstb_nand_verify_erased_page(mtd, chip, buf,
-							      addr);
-			/* erased page bitflips corrected */
-			if (err >= 0)
-				return err;
-		}
-
-		dev_dbg(ctrl->dev, "uncorrectable error at 0x%llx\n",
-			(unsigned long long)err_addr);
-		mtd->ecc_stats.failed++;
-		/* NAND layer expects zero on ECC errors */
-		return 0;
-	}
-
-	if (mtd_is_bitflip(err)) {
-		unsigned int corrected = brcmnand_count_corrected(ctrl);
-
-		dev_dbg(ctrl->dev, "corrected error at 0x%llx\n",
-			(unsigned long long)err_addr);
-		mtd->ecc_stats.corrected += corrected;
-		/* Always exceed the software-imposed threshold */
-		return max(mtd->bitflip_threshold, corrected);
-	}
-
-	return 0;
-}
-
-static int brcmnand_read_page(struct mtd_info *mtd, struct nand_chip *chip,
-			      uint8_t *buf, int oob_required, int page)
-{
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	u8 *oob = oob_required ? (u8 *)chip->oob_poi : NULL;
-
-	nand_read_page_op(chip, page, 0, NULL, 0);
-
-	return brcmnand_read(mtd, chip, host->last_addr,
-			mtd->writesize >> FC_SHIFT, (u32 *)buf, oob);
-}
-
-static int brcmnand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
-				  uint8_t *buf, int oob_required, int page)
-{
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	u8 *oob = oob_required ? (u8 *)chip->oob_poi : NULL;
-	int ret;
-
-	nand_read_page_op(chip, page, 0, NULL, 0);
-
-	brcmnand_set_ecc_enabled(host, 0);
-	ret = brcmnand_read(mtd, chip, host->last_addr,
-			mtd->writesize >> FC_SHIFT, (u32 *)buf, oob);
-	brcmnand_set_ecc_enabled(host, 1);
-	return ret;
-}
-
-static int brcmnand_read_oob(struct mtd_info *mtd, struct nand_chip *chip,
-			     int page)
-{
-	return brcmnand_read(mtd, chip, (u64)page << chip->page_shift,
-			mtd->writesize >> FC_SHIFT,
-			NULL, (u8 *)chip->oob_poi);
-}
-
-static int brcmnand_read_oob_raw(struct mtd_info *mtd, struct nand_chip *chip,
-				 int page)
-{
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-
-	brcmnand_set_ecc_enabled(host, 0);
-	brcmnand_read(mtd, chip, (u64)page << chip->page_shift,
-		mtd->writesize >> FC_SHIFT,
-		NULL, (u8 *)chip->oob_poi);
-	brcmnand_set_ecc_enabled(host, 1);
-	return 0;
-}
-
-static int brcmnand_write(struct mtd_info *mtd, struct nand_chip *chip,
-			  u64 addr, const u32 *buf, u8 *oob)
-{
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	struct brcmnand_controller *ctrl = host->ctrl;
-	unsigned int i, j, trans = mtd->writesize >> FC_SHIFT;
-	int status, ret = 0;
-
-	dev_dbg(ctrl->dev, "write %llx <- %p\n", (unsigned long long)addr, buf);
-
-	if (unlikely((unsigned long)buf & 0x03)) {
-		dev_warn(ctrl->dev, "unaligned buffer: %p\n", buf);
-		buf = (u32 *)((unsigned long)buf & ~0x03);
-	}
-
-	brcmnand_wp(mtd, 0);
-
-	for (i = 0; i < ctrl->max_oob; i += 4)
-		oob_reg_write(ctrl, i, 0xffffffff);
-
-	if (has_flash_dma(ctrl) && !oob && flash_dma_buf_ok(buf)) {
-		if (brcmnand_dma_trans(host, addr, (u32 *)buf,
-					mtd->writesize, CMD_PROGRAM_PAGE))
-			ret = -EIO;
-		goto out;
-	}
-
-	brcmnand_write_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS,
-			(host->cs << 16) | ((addr >> 32) & 0xffff));
-	(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS);
-
-	for (i = 0; i < trans; i++, addr += FC_BYTES) {
-		/* full address MUST be set before populating FC */
-		brcmnand_write_reg(ctrl, BRCMNAND_CMD_ADDRESS,
-				   lower_32_bits(addr));
-		(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_ADDRESS);
-
-		if (buf) {
-			brcmnand_soc_data_bus_prepare(ctrl->soc, false);
-
-			for (j = 0; j < FC_WORDS; j++, buf++)
-				brcmnand_write_fc(ctrl, j, *buf);
-
-			brcmnand_soc_data_bus_unprepare(ctrl->soc, false);
-		} else if (oob) {
-			for (j = 0; j < FC_WORDS; j++)
-				brcmnand_write_fc(ctrl, j, 0xffffffff);
-		}
-
-		if (oob) {
-			oob += write_oob_to_regs(ctrl, i, oob,
-					mtd->oobsize / trans,
-					host->hwcfg.sector_size_1k);
-		}
-
-		/* we cannot use SPARE_AREA_PROGRAM when PARTIAL_PAGE_EN=0 */
-		brcmnand_send_cmd(host, CMD_PROGRAM_PAGE);
-		status = brcmnand_waitfunc(mtd, chip);
-
-		if (status & NAND_STATUS_FAIL) {
-			dev_info(ctrl->dev, "program failed at %llx\n",
-				(unsigned long long)addr);
-			ret = -EIO;
-			goto out;
-		}
-	}
-out:
-	brcmnand_wp(mtd, 1);
-	return ret;
-}
-
-static int brcmnand_write_page(struct mtd_info *mtd, struct nand_chip *chip,
-			       const uint8_t *buf, int oob_required, int page)
-{
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	void *oob = oob_required ? chip->oob_poi : NULL;
-
-	nand_prog_page_begin_op(chip, page, 0, NULL, 0);
-	brcmnand_write(mtd, chip, host->last_addr, (const u32 *)buf, oob);
-
-	return nand_prog_page_end_op(chip);
-}
-
-static int brcmnand_write_page_raw(struct mtd_info *mtd,
-				   struct nand_chip *chip, const uint8_t *buf,
-				   int oob_required, int page)
-{
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	void *oob = oob_required ? chip->oob_poi : NULL;
-
-	nand_prog_page_begin_op(chip, page, 0, NULL, 0);
-	brcmnand_set_ecc_enabled(host, 0);
-	brcmnand_write(mtd, chip, host->last_addr, (const u32 *)buf, oob);
-	brcmnand_set_ecc_enabled(host, 1);
-
-	return nand_prog_page_end_op(chip);
-}
-
-static int brcmnand_write_oob(struct mtd_info *mtd, struct nand_chip *chip,
-				  int page)
-{
-	return brcmnand_write(mtd, chip, (u64)page << chip->page_shift,
-				  NULL, chip->oob_poi);
-}
-
-static int brcmnand_write_oob_raw(struct mtd_info *mtd, struct nand_chip *chip,
-				  int page)
-{
-	struct brcmnand_host *host = nand_get_controller_data(chip);
-	int ret;
-
-	brcmnand_set_ecc_enabled(host, 0);
-	ret = brcmnand_write(mtd, chip, (u64)page << chip->page_shift, NULL,
-				 (u8 *)chip->oob_poi);
-	brcmnand_set_ecc_enabled(host, 1);
-
-	return ret;
-}
-
-/***********************************************************************
- * Per-CS setup (1 NAND device)
- ***********************************************************************/
-
-static int brcmnand_set_cfg(struct brcmnand_host *host,
-			    struct brcmnand_cfg *cfg)
-{
-	struct brcmnand_controller *ctrl = host->ctrl;
-	struct nand_chip *chip = &host->chip;
-	u16 cfg_offs = brcmnand_cs_offset(ctrl, host->cs, BRCMNAND_CS_CFG);
-	u16 cfg_ext_offs = brcmnand_cs_offset(ctrl, host->cs,
-			BRCMNAND_CS_CFG_EXT);
-	u16 acc_control_offs = brcmnand_cs_offset(ctrl, host->cs,
-			BRCMNAND_CS_ACC_CONTROL);
-	u8 block_size = 0, page_size = 0, device_size = 0;
-	u32 tmp;
-
-	if (ctrl->block_sizes) {
-		int i, found;
-
-		for (i = 0, found = 0; ctrl->block_sizes[i]; i++)
-			if (ctrl->block_sizes[i] * 1024 == cfg->block_size) {
-				block_size = i;
-				found = 1;
-			}
-		if (!found) {
-			dev_warn(ctrl->dev, "invalid block size %u\n",
-					cfg->block_size);
-			return -EINVAL;
-		}
-	} else {
-		block_size = ffs(cfg->block_size) - ffs(BRCMNAND_MIN_BLOCKSIZE);
-	}
-
-	if (cfg->block_size < BRCMNAND_MIN_BLOCKSIZE || (ctrl->max_block_size &&
-				cfg->block_size > ctrl->max_block_size)) {
-		dev_warn(ctrl->dev, "invalid block size %u\n",
-				cfg->block_size);
-		block_size = 0;
-	}
-
-	if (ctrl->page_sizes) {
-		int i, found;
-
-		for (i = 0, found = 0; ctrl->page_sizes[i]; i++)
-			if (ctrl->page_sizes[i] == cfg->page_size) {
-				page_size = i;
-				found = 1;
-			}
-		if (!found) {
-			dev_warn(ctrl->dev, "invalid page size %u\n",
-					cfg->page_size);
-			return -EINVAL;
-		}
-	} else {
-		page_size = ffs(cfg->page_size) - ffs(BRCMNAND_MIN_PAGESIZE);
-	}
-
-	if (cfg->page_size < BRCMNAND_MIN_PAGESIZE || (ctrl->max_page_size &&
-				cfg->page_size > ctrl->max_page_size)) {
-		dev_warn(ctrl->dev, "invalid page size %u\n", cfg->page_size);
-		return -EINVAL;
-	}
-
-	if (fls64(cfg->device_size) < fls64(BRCMNAND_MIN_DEVSIZE)) {
-		dev_warn(ctrl->dev, "invalid device size 0x%llx\n",
-			(unsigned long long)cfg->device_size);
-		return -EINVAL;
-	}
-	device_size = fls64(cfg->device_size) - fls64(BRCMNAND_MIN_DEVSIZE);
-
-	tmp = (cfg->blk_adr_bytes << CFG_BLK_ADR_BYTES_SHIFT) |
-		(cfg->col_adr_bytes << CFG_COL_ADR_BYTES_SHIFT) |
-		(cfg->ful_adr_bytes << CFG_FUL_ADR_BYTES_SHIFT) |
-		(!!(cfg->device_width == 16) << CFG_BUS_WIDTH_SHIFT) |
-		(device_size << CFG_DEVICE_SIZE_SHIFT);
-	if (cfg_offs == cfg_ext_offs) {
-		tmp |= (page_size << CFG_PAGE_SIZE_SHIFT) |
-		       (block_size << CFG_BLK_SIZE_SHIFT);
-		nand_writereg(ctrl, cfg_offs, tmp);
-	} else {
-		nand_writereg(ctrl, cfg_offs, tmp);
-		tmp = (page_size << CFG_EXT_PAGE_SIZE_SHIFT) |
-		      (block_size << CFG_EXT_BLK_SIZE_SHIFT);
-		nand_writereg(ctrl, cfg_ext_offs, tmp);
-	}
-
-	tmp = nand_readreg(ctrl, acc_control_offs);
-	tmp &= ~brcmnand_ecc_level_mask(ctrl);
-	tmp |= cfg->ecc_level << NAND_ACC_CONTROL_ECC_SHIFT;
-	tmp &= ~brcmnand_spare_area_mask(ctrl);
-	tmp |= cfg->spare_area_size;
-	nand_writereg(ctrl, acc_control_offs, tmp);
-
-	brcmnand_set_sector_size_1k(host, cfg->sector_size_1k);
-
-	/* threshold = ceil(BCH-level * 0.75) */
-	brcmnand_wr_corr_thresh(host, DIV_ROUND_UP(chip->ecc.strength * 3, 4));
-
-	return 0;
-}
-
-static void brcmnand_print_cfg(struct brcmnand_host *host,
-			       char *buf, struct brcmnand_cfg *cfg)
-{
-	buf += sprintf(buf,
-		"%lluMiB total, %uKiB blocks, %u%s pages, %uB OOB, %u-bit",
-		(unsigned long long)cfg->device_size >> 20,
-		cfg->block_size >> 10,
-		cfg->page_size >= 1024 ? cfg->page_size >> 10 : cfg->page_size,
-		cfg->page_size >= 1024 ? "KiB" : "B",
-		cfg->spare_area_size, cfg->device_width);
-
-	/* Account for Hamming ECC and for BCH 512B vs 1KiB sectors */
-	if (is_hamming_ecc(host->ctrl, cfg))
-		sprintf(buf, ", Hamming ECC");
-	else if (cfg->sector_size_1k)
-		sprintf(buf, ", BCH-%u (1KiB sector)", cfg->ecc_level << 1);
-	else
-		sprintf(buf, ", BCH-%u", cfg->ecc_level);
-}
-
-/*
- * Minimum number of bytes to address a page. Calculated as:
- *     roundup(log2(size / page-size) / 8)
- *
- * NB: the following does not "round up" for non-power-of-2 'size'; but this is
- *     OK because many other things will break if 'size' is irregular...
- */
-static inline int get_blk_adr_bytes(u64 size, u32 writesize)
-{
-	return ALIGN(ilog2(size) - ilog2(writesize), 8) >> 3;
-}
-
-static int brcmnand_setup_dev(struct brcmnand_host *host)
-{
-	struct mtd_info *mtd = nand_to_mtd(&host->chip);
-	struct nand_chip *chip = &host->chip;
-	struct brcmnand_controller *ctrl = host->ctrl;
-	struct brcmnand_cfg *cfg = &host->hwcfg;
-	char msg[128];
-	u32 offs, tmp, oob_sector;
-	int ret;
-
-	memset(cfg, 0, sizeof(*cfg));
-
-	ret = of_property_read_u32(nand_get_flash_node(chip),
-				   "brcm,nand-oob-sector-size",
-				   &oob_sector);
-	if (ret) {
-		/* Use detected size */
-		cfg->spare_area_size = mtd->oobsize /
-					(mtd->writesize >> FC_SHIFT);
-	} else {
-		cfg->spare_area_size = oob_sector;
-	}
-	if (cfg->spare_area_size > ctrl->max_oob)
-		cfg->spare_area_size = ctrl->max_oob;
-	/*
-	 * Set oobsize to be consistent with controller's spare_area_size, as
-	 * the rest is inaccessible.
-	 */
-	mtd->oobsize = cfg->spare_area_size * (mtd->writesize >> FC_SHIFT);
-
-	cfg->device_size = mtd->size;
-	cfg->block_size = mtd->erasesize;
-	cfg->page_size = mtd->writesize;
-	cfg->device_width = (chip->options & NAND_BUSWIDTH_16) ? 16 : 8;
-	cfg->col_adr_bytes = 2;
-	cfg->blk_adr_bytes = get_blk_adr_bytes(mtd->size, mtd->writesize);
-
-	if (chip->ecc.mode != NAND_ECC_HW) {
-		dev_err(ctrl->dev, "only HW ECC supported; selected: %d\n",
-			chip->ecc.mode);
-		return -EINVAL;
-	}
-
-	if (chip->ecc.algo == NAND_ECC_UNKNOWN) {
-		if (chip->ecc.strength == 1 && chip->ecc.size == 512)
-			/* Default to Hamming for 1-bit ECC, if unspecified */
-			chip->ecc.algo = NAND_ECC_HAMMING;
-		else
-			/* Otherwise, BCH */
-			chip->ecc.algo = NAND_ECC_BCH;
-	}
-
-	if (chip->ecc.algo == NAND_ECC_HAMMING && (chip->ecc.strength != 1 ||
-						   chip->ecc.size != 512)) {
-		dev_err(ctrl->dev, "invalid Hamming params: %d bits per %d bytes\n",
-			chip->ecc.strength, chip->ecc.size);
-		return -EINVAL;
-	}
-
-	switch (chip->ecc.size) {
-	case 512:
-		if (chip->ecc.algo == NAND_ECC_HAMMING)
-			cfg->ecc_level = 15;
-		else
-			cfg->ecc_level = chip->ecc.strength;
-		cfg->sector_size_1k = 0;
-		break;
-	case 1024:
-		if (!(ctrl->features & BRCMNAND_HAS_1K_SECTORS)) {
-			dev_err(ctrl->dev, "1KB sectors not supported\n");
-			return -EINVAL;
-		}
-		if (chip->ecc.strength & 0x1) {
-			dev_err(ctrl->dev,
-				"odd ECC not supported with 1KB sectors\n");
-			return -EINVAL;
-		}
-
-		cfg->ecc_level = chip->ecc.strength >> 1;
-		cfg->sector_size_1k = 1;
-		break;
-	default:
-		dev_err(ctrl->dev, "unsupported ECC size: %d\n",
-			chip->ecc.size);
-		return -EINVAL;
-	}
-
-	cfg->ful_adr_bytes = cfg->blk_adr_bytes;
-	if (mtd->writesize > 512)
-		cfg->ful_adr_bytes += cfg->col_adr_bytes;
-	else
-		cfg->ful_adr_bytes += 1;
-
-	ret = brcmnand_set_cfg(host, cfg);
-	if (ret)
-		return ret;
-
-	brcmnand_set_ecc_enabled(host, 1);
-
-	brcmnand_print_cfg(host, msg, cfg);
-	dev_info(ctrl->dev, "detected %s\n", msg);
-
-	/* Configure ACC_CONTROL */
-	offs = brcmnand_cs_offset(ctrl, host->cs, BRCMNAND_CS_ACC_CONTROL);
-	tmp = nand_readreg(ctrl, offs);
-	tmp &= ~ACC_CONTROL_PARTIAL_PAGE;
-	tmp &= ~ACC_CONTROL_RD_ERASED;
-
-	/* We need to turn on Read from erased paged protected by ECC */
-	if (ctrl->nand_version >= 0x0702)
-		tmp |= ACC_CONTROL_RD_ERASED;
-	tmp &= ~ACC_CONTROL_FAST_PGM_RDIN;
-	if (ctrl->features & BRCMNAND_HAS_PREFETCH)
-		tmp &= ~ACC_CONTROL_PREFETCH;
-
-	nand_writereg(ctrl, offs, tmp);
-
-	return 0;
-}
-
-static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn)
-{
-	struct brcmnand_controller *ctrl = host->ctrl;
-	struct platform_device *pdev = host->pdev;
-	struct mtd_info *mtd;
-	struct nand_chip *chip;
-	int ret;
-	u16 cfg_offs;
-
-	ret = of_property_read_u32(dn, "reg", &host->cs);
-	if (ret) {
-		dev_err(&pdev->dev, "can't get chip-select\n");
-		return -ENXIO;
-	}
-
-	mtd = nand_to_mtd(&host->chip);
-	chip = &host->chip;
-
-	nand_set_flash_node(chip, dn);
-	nand_set_controller_data(chip, host);
-	mtd->name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "brcmnand.%d",
-				   host->cs);
-	if (!mtd->name)
-		return -ENOMEM;
-
-	mtd->owner = THIS_MODULE;
-	mtd->dev.parent = &pdev->dev;
-
-	chip->IO_ADDR_R = (void __iomem *)0xdeadbeef;
-	chip->IO_ADDR_W = (void __iomem *)0xdeadbeef;
-
-	chip->cmd_ctrl = brcmnand_cmd_ctrl;
-	chip->cmdfunc = brcmnand_cmdfunc;
-	chip->waitfunc = brcmnand_waitfunc;
-	chip->read_byte = brcmnand_read_byte;
-	chip->read_buf = brcmnand_read_buf;
-	chip->write_buf = brcmnand_write_buf;
-
-	chip->ecc.mode = NAND_ECC_HW;
-	chip->ecc.read_page = brcmnand_read_page;
-	chip->ecc.write_page = brcmnand_write_page;
-	chip->ecc.read_page_raw = brcmnand_read_page_raw;
-	chip->ecc.write_page_raw = brcmnand_write_page_raw;
-	chip->ecc.write_oob_raw = brcmnand_write_oob_raw;
-	chip->ecc.read_oob_raw = brcmnand_read_oob_raw;
-	chip->ecc.read_oob = brcmnand_read_oob;
-	chip->ecc.write_oob = brcmnand_write_oob;
-
-	chip->controller = &ctrl->controller;
-
-	/*
-	 * The bootloader might have configured 16bit mode but
-	 * NAND READID command only works in 8bit mode. We force
-	 * 8bit mode here to ensure that NAND READID commands works.
-	 */
-	cfg_offs = brcmnand_cs_offset(ctrl, host->cs, BRCMNAND_CS_CFG);
-	nand_writereg(ctrl, cfg_offs,
-		      nand_readreg(ctrl, cfg_offs) & ~CFG_BUS_WIDTH);
-
-	ret = nand_scan_ident(mtd, 1, NULL);
-	if (ret)
-		return ret;
-
-	chip->options |= NAND_NO_SUBPAGE_WRITE;
-	/*
-	 * Avoid (for instance) kmap()'d buffers from JFFS2, which we can't DMA
-	 * to/from, and have nand_base pass us a bounce buffer instead, as
-	 * needed.
-	 */
-	chip->options |= NAND_USE_BOUNCE_BUFFER;
-
-	if (chip->bbt_options & NAND_BBT_USE_FLASH)
-		chip->bbt_options |= NAND_BBT_NO_OOB;
-
-	if (brcmnand_setup_dev(host))
-		return -ENXIO;
-
-	chip->ecc.size = host->hwcfg.sector_size_1k ? 1024 : 512;
-	/* only use our internal HW threshold */
-	mtd->bitflip_threshold = 1;
-
-	ret = brcmstb_choose_ecc_layout(host);
-	if (ret)
-		return ret;
-
-	ret = nand_scan_tail(mtd);
-	if (ret)
-		return ret;
-
-	return mtd_device_register(mtd, NULL, 0);
-}
-
-static void brcmnand_save_restore_cs_config(struct brcmnand_host *host,
-					    int restore)
-{
-	struct brcmnand_controller *ctrl = host->ctrl;
-	u16 cfg_offs = brcmnand_cs_offset(ctrl, host->cs, BRCMNAND_CS_CFG);
-	u16 cfg_ext_offs = brcmnand_cs_offset(ctrl, host->cs,
-			BRCMNAND_CS_CFG_EXT);
-	u16 acc_control_offs = brcmnand_cs_offset(ctrl, host->cs,
-			BRCMNAND_CS_ACC_CONTROL);
-	u16 t1_offs = brcmnand_cs_offset(ctrl, host->cs, BRCMNAND_CS_TIMING1);
-	u16 t2_offs = brcmnand_cs_offset(ctrl, host->cs, BRCMNAND_CS_TIMING2);
-
-	if (restore) {
-		nand_writereg(ctrl, cfg_offs, host->hwcfg.config);
-		if (cfg_offs != cfg_ext_offs)
-			nand_writereg(ctrl, cfg_ext_offs,
-				      host->hwcfg.config_ext);
-		nand_writereg(ctrl, acc_control_offs, host->hwcfg.acc_control);
-		nand_writereg(ctrl, t1_offs, host->hwcfg.timing_1);
-		nand_writereg(ctrl, t2_offs, host->hwcfg.timing_2);
-	} else {
-		host->hwcfg.config = nand_readreg(ctrl, cfg_offs);
-		if (cfg_offs != cfg_ext_offs)
-			host->hwcfg.config_ext =
-				nand_readreg(ctrl, cfg_ext_offs);
-		host->hwcfg.acc_control = nand_readreg(ctrl, acc_control_offs);
-		host->hwcfg.timing_1 = nand_readreg(ctrl, t1_offs);
-		host->hwcfg.timing_2 = nand_readreg(ctrl, t2_offs);
-	}
-}
-
-static int brcmnand_suspend(struct device *dev)
-{
-	struct brcmnand_controller *ctrl = dev_get_drvdata(dev);
-	struct brcmnand_host *host;
-
-	list_for_each_entry(host, &ctrl->host_list, node)
-		brcmnand_save_restore_cs_config(host, 0);
-
-	ctrl->nand_cs_nand_select = brcmnand_read_reg(ctrl, BRCMNAND_CS_SELECT);
-	ctrl->nand_cs_nand_xor = brcmnand_read_reg(ctrl, BRCMNAND_CS_XOR);
-	ctrl->corr_stat_threshold =
-		brcmnand_read_reg(ctrl, BRCMNAND_CORR_THRESHOLD);
-
-	if (has_flash_dma(ctrl))
-		ctrl->flash_dma_mode = flash_dma_readl(ctrl, FLASH_DMA_MODE);
-
-	return 0;
-}
-
-static int brcmnand_resume(struct device *dev)
-{
-	struct brcmnand_controller *ctrl = dev_get_drvdata(dev);
-	struct brcmnand_host *host;
-
-	if (has_flash_dma(ctrl)) {
-		flash_dma_writel(ctrl, FLASH_DMA_MODE, ctrl->flash_dma_mode);
-		flash_dma_writel(ctrl, FLASH_DMA_ERROR_STATUS, 0);
-	}
-
-	brcmnand_write_reg(ctrl, BRCMNAND_CS_SELECT, ctrl->nand_cs_nand_select);
-	brcmnand_write_reg(ctrl, BRCMNAND_CS_XOR, ctrl->nand_cs_nand_xor);
-	brcmnand_write_reg(ctrl, BRCMNAND_CORR_THRESHOLD,
-			ctrl->corr_stat_threshold);
-	if (ctrl->soc) {
-		/* Clear/re-enable interrupt */
-		ctrl->soc->ctlrdy_ack(ctrl->soc);
-		ctrl->soc->ctlrdy_set_enabled(ctrl->soc, true);
-	}
-
-	list_for_each_entry(host, &ctrl->host_list, node) {
-		struct nand_chip *chip = &host->chip;
-
-		brcmnand_save_restore_cs_config(host, 1);
-
-		/* Reset the chip, required by some chips after power-up */
-		nand_reset_op(chip);
-	}
-
-	return 0;
-}
-
-const struct dev_pm_ops brcmnand_pm_ops = {
-	.suspend		= brcmnand_suspend,
-	.resume			= brcmnand_resume,
-};
-EXPORT_SYMBOL_GPL(brcmnand_pm_ops);
-
-static const struct of_device_id brcmnand_of_match[] = {
-	{ .compatible = "brcm,brcmnand-v4.0" },
-	{ .compatible = "brcm,brcmnand-v5.0" },
-	{ .compatible = "brcm,brcmnand-v6.0" },
-	{ .compatible = "brcm,brcmnand-v6.1" },
-	{ .compatible = "brcm,brcmnand-v6.2" },
-	{ .compatible = "brcm,brcmnand-v7.0" },
-	{ .compatible = "brcm,brcmnand-v7.1" },
-	{ .compatible = "brcm,brcmnand-v7.2" },
-	{},
-};
-MODULE_DEVICE_TABLE(of, brcmnand_of_match);
-
-/***********************************************************************
- * Platform driver setup (per controller)
- ***********************************************************************/
-
-int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc)
-{
-	struct device *dev = &pdev->dev;
-	struct device_node *dn = dev->of_node, *child;
-	struct brcmnand_controller *ctrl;
-	struct resource *res;
-	int ret;
-
-	/* We only support device-tree instantiation */
-	if (!dn)
-		return -ENODEV;
-
-	if (!of_match_node(brcmnand_of_match, dn))
-		return -ENODEV;
-
-	ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL);
-	if (!ctrl)
-		return -ENOMEM;
-
-	dev_set_drvdata(dev, ctrl);
-	ctrl->dev = dev;
-
-	init_completion(&ctrl->done);
-	init_completion(&ctrl->dma_done);
-	nand_hw_control_init(&ctrl->controller);
-	INIT_LIST_HEAD(&ctrl->host_list);
-
-	/* NAND register range */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	ctrl->nand_base = devm_ioremap_resource(dev, res);
-	if (IS_ERR(ctrl->nand_base))
-		return PTR_ERR(ctrl->nand_base);
-
-	/* Enable clock before using NAND registers */
-	ctrl->clk = devm_clk_get(dev, "nand");
-	if (!IS_ERR(ctrl->clk)) {
-		ret = clk_prepare_enable(ctrl->clk);
-		if (ret)
-			return ret;
-	} else {
-		ret = PTR_ERR(ctrl->clk);
-		if (ret == -EPROBE_DEFER)
-			return ret;
-
-		ctrl->clk = NULL;
-	}
-
-	/* Initialize NAND revision */
-	ret = brcmnand_revision_init(ctrl);
-	if (ret)
-		goto err;
-
-	/*
-	 * Most chips have this cache at a fixed offset within 'nand' block.
-	 * Some must specify this region separately.
-	 */
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand-cache");
-	if (res) {
-		ctrl->nand_fc = devm_ioremap_resource(dev, res);
-		if (IS_ERR(ctrl->nand_fc)) {
-			ret = PTR_ERR(ctrl->nand_fc);
-			goto err;
-		}
-	} else {
-		ctrl->nand_fc = ctrl->nand_base +
-				ctrl->reg_offsets[BRCMNAND_FC_BASE];
-	}
-
-	/* FLASH_DMA */
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "flash-dma");
-	if (res) {
-		ctrl->flash_dma_base = devm_ioremap_resource(dev, res);
-		if (IS_ERR(ctrl->flash_dma_base)) {
-			ret = PTR_ERR(ctrl->flash_dma_base);
-			goto err;
-		}
-
-		flash_dma_writel(ctrl, FLASH_DMA_MODE, 1); /* linked-list */
-		flash_dma_writel(ctrl, FLASH_DMA_ERROR_STATUS, 0);
-
-		/* Allocate descriptor(s) */
-		ctrl->dma_desc = dmam_alloc_coherent(dev,
-						     sizeof(*ctrl->dma_desc),
-						     &ctrl->dma_pa, GFP_KERNEL);
-		if (!ctrl->dma_desc) {
-			ret = -ENOMEM;
-			goto err;
-		}
-
-		ctrl->dma_irq = platform_get_irq(pdev, 1);
-		if ((int)ctrl->dma_irq < 0) {
-			dev_err(dev, "missing FLASH_DMA IRQ\n");
-			ret = -ENODEV;
-			goto err;
-		}
-
-		ret = devm_request_irq(dev, ctrl->dma_irq,
-				brcmnand_dma_irq, 0, DRV_NAME,
-				ctrl);
-		if (ret < 0) {
-			dev_err(dev, "can't allocate IRQ %d: error %d\n",
-					ctrl->dma_irq, ret);
-			goto err;
-		}
-
-		dev_info(dev, "enabling FLASH_DMA\n");
-	}
-
-	/* Disable automatic device ID config, direct addressing */
-	brcmnand_rmw_reg(ctrl, BRCMNAND_CS_SELECT,
-			 CS_SELECT_AUTO_DEVICE_ID_CFG | 0xff, 0, 0);
-	/* Disable XOR addressing */
-	brcmnand_rmw_reg(ctrl, BRCMNAND_CS_XOR, 0xff, 0, 0);
-
-	if (ctrl->features & BRCMNAND_HAS_WP) {
-		/* Permanently disable write protection */
-		if (wp_on == 2)
-			brcmnand_set_wp(ctrl, false);
-	} else {
-		wp_on = 0;
-	}
-
-	/* IRQ */
-	ctrl->irq = platform_get_irq(pdev, 0);
-	if ((int)ctrl->irq < 0) {
-		dev_err(dev, "no IRQ defined\n");
-		ret = -ENODEV;
-		goto err;
-	}
-
-	/*
-	 * Some SoCs integrate this controller (e.g., its interrupt bits) in
-	 * interesting ways
-	 */
-	if (soc) {
-		ctrl->soc = soc;
-
-		ret = devm_request_irq(dev, ctrl->irq, brcmnand_irq, 0,
-				       DRV_NAME, ctrl);
-
-		/* Enable interrupt */
-		ctrl->soc->ctlrdy_ack(ctrl->soc);
-		ctrl->soc->ctlrdy_set_enabled(ctrl->soc, true);
-	} else {
-		/* Use standard interrupt infrastructure */
-		ret = devm_request_irq(dev, ctrl->irq, brcmnand_ctlrdy_irq, 0,
-				       DRV_NAME, ctrl);
-	}
-	if (ret < 0) {
-		dev_err(dev, "can't allocate IRQ %d: error %d\n",
-			ctrl->irq, ret);
-		goto err;
-	}
-
-	for_each_available_child_of_node(dn, child) {
-		if (of_device_is_compatible(child, "brcm,nandcs")) {
-			struct brcmnand_host *host;
-
-			host = devm_kzalloc(dev, sizeof(*host), GFP_KERNEL);
-			if (!host) {
-				of_node_put(child);
-				ret = -ENOMEM;
-				goto err;
-			}
-			host->pdev = pdev;
-			host->ctrl = ctrl;
-
-			ret = brcmnand_init_cs(host, child);
-			if (ret) {
-				devm_kfree(dev, host);
-				continue; /* Try all chip-selects */
-			}
-
-			list_add_tail(&host->node, &ctrl->host_list);
-		}
-	}
-
-	/* No chip-selects could initialize properly */
-	if (list_empty(&ctrl->host_list)) {
-		ret = -ENODEV;
-		goto err;
-	}
-
-	return 0;
-
-err:
-	clk_disable_unprepare(ctrl->clk);
-	return ret;
-
-}
-EXPORT_SYMBOL_GPL(brcmnand_probe);
-
-int brcmnand_remove(struct platform_device *pdev)
-{
-	struct brcmnand_controller *ctrl = dev_get_drvdata(&pdev->dev);
-	struct brcmnand_host *host;
-
-	list_for_each_entry(host, &ctrl->host_list, node)
-		nand_release(nand_to_mtd(&host->chip));
-
-	clk_disable_unprepare(ctrl->clk);
-
-	dev_set_drvdata(&pdev->dev, NULL);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(brcmnand_remove);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Kevin Cernekee");
-MODULE_AUTHOR("Brian Norris");
-MODULE_DESCRIPTION("NAND driver for Broadcom chips");
-MODULE_ALIAS("platform:brcmnand");