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Message-Id: <20230113062339.1909087-12-hch@lst.de>
Date: Fri, 13 Jan 2023 07:23:28 +0100
From: Christoph Hellwig <hch@....de>
To: Yoshinori Sato <ysato@...rs.sourceforge.jp>,
Rich Felker <dalias@...c.org>, Arnd Bergmann <arnd@...db.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
Geert Uytterhoeven <geert+renesas@...der.be>,
linux-kernel@...r.kernel.org, linux-watchdog@...r.kernel.org,
devicetree@...r.kernel.org, linux-arch@...r.kernel.org,
dmaengine@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-renesas-soc@...r.kernel.org, linux-i2c@...r.kernel.org,
linux-input@...r.kernel.org, linux-media@...r.kernel.org,
linux-mmc@...r.kernel.org, linux-mtd@...ts.infradead.org,
netdev@...r.kernel.org, linux-gpio@...r.kernel.org,
linux-rtc@...r.kernel.org, linux-spi@...r.kernel.org,
linux-serial@...r.kernel.org, linux-usb@...r.kernel.org,
linux-fbdev@...r.kernel.org, alsa-devel@...a-project.org,
linux-sh@...r.kernel.org
Subject: [PATCH 11/22] mtd/nand: remove sh_flctl
Now that arch/sh is removed this driver is dead code.
Signed-off-by: Christoph Hellwig <hch@....de>
---
drivers/mtd/nand/raw/Kconfig | 8 -
drivers/mtd/nand/raw/Makefile | 1 -
drivers/mtd/nand/raw/sh_flctl.c | 1234 -------------------------------
include/linux/mtd/sh_flctl.h | 180 -----
4 files changed, 1423 deletions(-)
delete mode 100644 drivers/mtd/nand/raw/sh_flctl.c
delete mode 100644 include/linux/mtd/sh_flctl.h
diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig
index 98ea1c9e65c8ef..20a4988ea418d5 100644
--- a/drivers/mtd/nand/raw/Kconfig
+++ b/drivers/mtd/nand/raw/Kconfig
@@ -284,14 +284,6 @@ config MTD_NAND_MXC
This enables the driver for the NAND flash controller on the
MXC processors.
-config MTD_NAND_SH_FLCTL
- tristate "Renesas SuperH FLCTL NAND controller"
- depends on SUPERH || COMPILE_TEST
- depends on HAS_IOMEM
- help
- Several Renesas SuperH CPU has FLCTL. This option enables support
- for NAND Flash using FLCTL.
-
config MTD_NAND_DAVINCI
tristate "DaVinci/Keystone NAND controller"
depends on ARCH_DAVINCI || (ARCH_KEYSTONE && TI_AEMIF) || COMPILE_TEST
diff --git a/drivers/mtd/nand/raw/Makefile b/drivers/mtd/nand/raw/Makefile
index fa1d0012031012..2c6eb25c9d0aae 100644
--- a/drivers/mtd/nand/raw/Makefile
+++ b/drivers/mtd/nand/raw/Makefile
@@ -33,7 +33,6 @@ obj-$(CONFIG_MTD_NAND_FSL_IFC) += fsl_ifc_nand.o
obj-$(CONFIG_MTD_NAND_FSL_UPM) += fsl_upm.o
obj-$(CONFIG_MTD_NAND_SLC_LPC32XX) += lpc32xx_slc.o
obj-$(CONFIG_MTD_NAND_MLC_LPC32XX) += lpc32xx_mlc.o
-obj-$(CONFIG_MTD_NAND_SH_FLCTL) += sh_flctl.o
obj-$(CONFIG_MTD_NAND_MXC) += mxc_nand.o
obj-$(CONFIG_MTD_NAND_SOCRATES) += socrates_nand.o
obj-$(CONFIG_MTD_NAND_TXX9NDFMC) += txx9ndfmc.o
diff --git a/drivers/mtd/nand/raw/sh_flctl.c b/drivers/mtd/nand/raw/sh_flctl.c
deleted file mode 100644
index a278829469d610..00000000000000
--- a/drivers/mtd/nand/raw/sh_flctl.c
+++ /dev/null
@@ -1,1234 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * SuperH FLCTL nand controller
- *
- * Copyright (c) 2008 Renesas Solutions Corp.
- * Copyright (c) 2008 Atom Create Engineering Co., Ltd.
- *
- * Based on fsl_elbc_nand.c, Copyright (c) 2006-2007 Freescale Semiconductor
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/completion.h>
-#include <linux/delay.h>
-#include <linux/dmaengine.h>
-#include <linux/dma-mapping.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/sh_dma.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/rawnand.h>
-#include <linux/mtd/partitions.h>
-#include <linux/mtd/sh_flctl.h>
-
-static int flctl_4secc_ooblayout_sp_ecc(struct mtd_info *mtd, int section,
- struct mtd_oob_region *oobregion)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
-
- if (section)
- return -ERANGE;
-
- oobregion->offset = 0;
- oobregion->length = chip->ecc.bytes;
-
- return 0;
-}
-
-static int flctl_4secc_ooblayout_sp_free(struct mtd_info *mtd, int section,
- struct mtd_oob_region *oobregion)
-{
- if (section)
- return -ERANGE;
-
- oobregion->offset = 12;
- oobregion->length = 4;
-
- return 0;
-}
-
-static const struct mtd_ooblayout_ops flctl_4secc_oob_smallpage_ops = {
- .ecc = flctl_4secc_ooblayout_sp_ecc,
- .free = flctl_4secc_ooblayout_sp_free,
-};
-
-static int flctl_4secc_ooblayout_lp_ecc(struct mtd_info *mtd, int section,
- struct mtd_oob_region *oobregion)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
-
- if (section >= chip->ecc.steps)
- return -ERANGE;
-
- oobregion->offset = (section * 16) + 6;
- oobregion->length = chip->ecc.bytes;
-
- return 0;
-}
-
-static int flctl_4secc_ooblayout_lp_free(struct mtd_info *mtd, int section,
- struct mtd_oob_region *oobregion)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
-
- if (section >= chip->ecc.steps)
- return -ERANGE;
-
- oobregion->offset = section * 16;
- oobregion->length = 6;
-
- if (!section) {
- oobregion->offset += 2;
- oobregion->length -= 2;
- }
-
- return 0;
-}
-
-static const struct mtd_ooblayout_ops flctl_4secc_oob_largepage_ops = {
- .ecc = flctl_4secc_ooblayout_lp_ecc,
- .free = flctl_4secc_ooblayout_lp_free,
-};
-
-static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
-
-static struct nand_bbt_descr flctl_4secc_smallpage = {
- .offs = 11,
- .len = 1,
- .pattern = scan_ff_pattern,
-};
-
-static struct nand_bbt_descr flctl_4secc_largepage = {
- .offs = 0,
- .len = 2,
- .pattern = scan_ff_pattern,
-};
-
-static void empty_fifo(struct sh_flctl *flctl)
-{
- writel(flctl->flintdmacr_base | AC1CLR | AC0CLR, FLINTDMACR(flctl));
- writel(flctl->flintdmacr_base, FLINTDMACR(flctl));
-}
-
-static void start_translation(struct sh_flctl *flctl)
-{
- writeb(TRSTRT, FLTRCR(flctl));
-}
-
-static void timeout_error(struct sh_flctl *flctl, const char *str)
-{
- dev_err(&flctl->pdev->dev, "Timeout occurred in %s\n", str);
-}
-
-static void wait_completion(struct sh_flctl *flctl)
-{
- uint32_t timeout = LOOP_TIMEOUT_MAX;
-
- while (timeout--) {
- if (readb(FLTRCR(flctl)) & TREND) {
- writeb(0x0, FLTRCR(flctl));
- return;
- }
- udelay(1);
- }
-
- timeout_error(flctl, __func__);
- writeb(0x0, FLTRCR(flctl));
-}
-
-static void flctl_dma_complete(void *param)
-{
- struct sh_flctl *flctl = param;
-
- complete(&flctl->dma_complete);
-}
-
-static void flctl_release_dma(struct sh_flctl *flctl)
-{
- if (flctl->chan_fifo0_rx) {
- dma_release_channel(flctl->chan_fifo0_rx);
- flctl->chan_fifo0_rx = NULL;
- }
- if (flctl->chan_fifo0_tx) {
- dma_release_channel(flctl->chan_fifo0_tx);
- flctl->chan_fifo0_tx = NULL;
- }
-}
-
-static void flctl_setup_dma(struct sh_flctl *flctl)
-{
- dma_cap_mask_t mask;
- struct dma_slave_config cfg;
- struct platform_device *pdev = flctl->pdev;
- struct sh_flctl_platform_data *pdata = dev_get_platdata(&pdev->dev);
- int ret;
-
- if (!pdata)
- return;
-
- if (pdata->slave_id_fifo0_tx <= 0 || pdata->slave_id_fifo0_rx <= 0)
- return;
-
- /* We can only either use DMA for both Tx and Rx or not use it at all */
- dma_cap_zero(mask);
- dma_cap_set(DMA_SLAVE, mask);
-
- flctl->chan_fifo0_tx = dma_request_channel(mask, shdma_chan_filter,
- (void *)(uintptr_t)pdata->slave_id_fifo0_tx);
- dev_dbg(&pdev->dev, "%s: TX: got channel %p\n", __func__,
- flctl->chan_fifo0_tx);
-
- if (!flctl->chan_fifo0_tx)
- return;
-
- memset(&cfg, 0, sizeof(cfg));
- cfg.direction = DMA_MEM_TO_DEV;
- cfg.dst_addr = flctl->fifo;
- cfg.src_addr = 0;
- ret = dmaengine_slave_config(flctl->chan_fifo0_tx, &cfg);
- if (ret < 0)
- goto err;
-
- flctl->chan_fifo0_rx = dma_request_channel(mask, shdma_chan_filter,
- (void *)(uintptr_t)pdata->slave_id_fifo0_rx);
- dev_dbg(&pdev->dev, "%s: RX: got channel %p\n", __func__,
- flctl->chan_fifo0_rx);
-
- if (!flctl->chan_fifo0_rx)
- goto err;
-
- cfg.direction = DMA_DEV_TO_MEM;
- cfg.dst_addr = 0;
- cfg.src_addr = flctl->fifo;
- ret = dmaengine_slave_config(flctl->chan_fifo0_rx, &cfg);
- if (ret < 0)
- goto err;
-
- init_completion(&flctl->dma_complete);
-
- return;
-
-err:
- flctl_release_dma(flctl);
-}
-
-static void set_addr(struct mtd_info *mtd, int column, int page_addr)
-{
- struct sh_flctl *flctl = mtd_to_flctl(mtd);
- uint32_t addr = 0;
-
- if (column == -1) {
- addr = page_addr; /* ERASE1 */
- } else if (page_addr != -1) {
- /* SEQIN, READ0, etc.. */
- if (flctl->chip.options & NAND_BUSWIDTH_16)
- column >>= 1;
- if (flctl->page_size) {
- addr = column & 0x0FFF;
- addr |= (page_addr & 0xff) << 16;
- addr |= ((page_addr >> 8) & 0xff) << 24;
- /* big than 128MB */
- if (flctl->rw_ADRCNT == ADRCNT2_E) {
- uint32_t addr2;
- addr2 = (page_addr >> 16) & 0xff;
- writel(addr2, FLADR2(flctl));
- }
- } else {
- addr = column;
- addr |= (page_addr & 0xff) << 8;
- addr |= ((page_addr >> 8) & 0xff) << 16;
- addr |= ((page_addr >> 16) & 0xff) << 24;
- }
- }
- writel(addr, FLADR(flctl));
-}
-
-static void wait_rfifo_ready(struct sh_flctl *flctl)
-{
- uint32_t timeout = LOOP_TIMEOUT_MAX;
-
- while (timeout--) {
- uint32_t val;
- /* check FIFO */
- val = readl(FLDTCNTR(flctl)) >> 16;
- if (val & 0xFF)
- return;
- udelay(1);
- }
- timeout_error(flctl, __func__);
-}
-
-static void wait_wfifo_ready(struct sh_flctl *flctl)
-{
- uint32_t len, timeout = LOOP_TIMEOUT_MAX;
-
- while (timeout--) {
- /* check FIFO */
- len = (readl(FLDTCNTR(flctl)) >> 16) & 0xFF;
- if (len >= 4)
- return;
- udelay(1);
- }
- timeout_error(flctl, __func__);
-}
-
-static enum flctl_ecc_res_t wait_recfifo_ready
- (struct sh_flctl *flctl, int sector_number)
-{
- uint32_t timeout = LOOP_TIMEOUT_MAX;
- void __iomem *ecc_reg[4];
- int i;
- int state = FL_SUCCESS;
- uint32_t data, size;
-
- /*
- * First this loops checks in FLDTCNTR if we are ready to read out the
- * oob data. This is the case if either all went fine without errors or
- * if the bottom part of the loop corrected the errors or marked them as
- * uncorrectable and the controller is given time to push the data into
- * the FIFO.
- */
- while (timeout--) {
- /* check if all is ok and we can read out the OOB */
- size = readl(FLDTCNTR(flctl)) >> 24;
- if ((size & 0xFF) == 4)
- return state;
-
- /* check if a correction code has been calculated */
- if (!(readl(FL4ECCCR(flctl)) & _4ECCEND)) {
- /*
- * either we wait for the fifo to be filled or a
- * correction pattern is being generated
- */
- udelay(1);
- continue;
- }
-
- /* check for an uncorrectable error */
- if (readl(FL4ECCCR(flctl)) & _4ECCFA) {
- /* check if we face a non-empty page */
- for (i = 0; i < 512; i++) {
- if (flctl->done_buff[i] != 0xff) {
- state = FL_ERROR; /* can't correct */
- break;
- }
- }
-
- if (state == FL_SUCCESS)
- dev_dbg(&flctl->pdev->dev,
- "reading empty sector %d, ecc error ignored\n",
- sector_number);
-
- writel(0, FL4ECCCR(flctl));
- continue;
- }
-
- /* start error correction */
- ecc_reg[0] = FL4ECCRESULT0(flctl);
- ecc_reg[1] = FL4ECCRESULT1(flctl);
- ecc_reg[2] = FL4ECCRESULT2(flctl);
- ecc_reg[3] = FL4ECCRESULT3(flctl);
-
- for (i = 0; i < 3; i++) {
- uint8_t org;
- unsigned int index;
-
- data = readl(ecc_reg[i]);
-
- if (flctl->page_size)
- index = (512 * sector_number) +
- (data >> 16);
- else
- index = data >> 16;
-
- org = flctl->done_buff[index];
- flctl->done_buff[index] = org ^ (data & 0xFF);
- }
- state = FL_REPAIRABLE;
- writel(0, FL4ECCCR(flctl));
- }
-
- timeout_error(flctl, __func__);
- return FL_TIMEOUT; /* timeout */
-}
-
-static void wait_wecfifo_ready(struct sh_flctl *flctl)
-{
- uint32_t timeout = LOOP_TIMEOUT_MAX;
- uint32_t len;
-
- while (timeout--) {
- /* check FLECFIFO */
- len = (readl(FLDTCNTR(flctl)) >> 24) & 0xFF;
- if (len >= 4)
- return;
- udelay(1);
- }
- timeout_error(flctl, __func__);
-}
-
-static int flctl_dma_fifo0_transfer(struct sh_flctl *flctl, unsigned long *buf,
- int len, enum dma_data_direction dir)
-{
- struct dma_async_tx_descriptor *desc = NULL;
- struct dma_chan *chan;
- enum dma_transfer_direction tr_dir;
- dma_addr_t dma_addr;
- dma_cookie_t cookie;
- uint32_t reg;
- int ret = 0;
- unsigned long time_left;
-
- if (dir == DMA_FROM_DEVICE) {
- chan = flctl->chan_fifo0_rx;
- tr_dir = DMA_DEV_TO_MEM;
- } else {
- chan = flctl->chan_fifo0_tx;
- tr_dir = DMA_MEM_TO_DEV;
- }
-
- dma_addr = dma_map_single(chan->device->dev, buf, len, dir);
-
- if (!dma_mapping_error(chan->device->dev, dma_addr))
- desc = dmaengine_prep_slave_single(chan, dma_addr, len,
- tr_dir, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
-
- if (desc) {
- reg = readl(FLINTDMACR(flctl));
- reg |= DREQ0EN;
- writel(reg, FLINTDMACR(flctl));
-
- desc->callback = flctl_dma_complete;
- desc->callback_param = flctl;
- cookie = dmaengine_submit(desc);
- if (dma_submit_error(cookie)) {
- ret = dma_submit_error(cookie);
- dev_warn(&flctl->pdev->dev,
- "DMA submit failed, falling back to PIO\n");
- goto out;
- }
-
- dma_async_issue_pending(chan);
- } else {
- /* DMA failed, fall back to PIO */
- flctl_release_dma(flctl);
- dev_warn(&flctl->pdev->dev,
- "DMA failed, falling back to PIO\n");
- ret = -EIO;
- goto out;
- }
-
- time_left =
- wait_for_completion_timeout(&flctl->dma_complete,
- msecs_to_jiffies(3000));
-
- if (time_left == 0) {
- dmaengine_terminate_all(chan);
- dev_err(&flctl->pdev->dev, "wait_for_completion_timeout\n");
- ret = -ETIMEDOUT;
- }
-
-out:
- reg = readl(FLINTDMACR(flctl));
- reg &= ~DREQ0EN;
- writel(reg, FLINTDMACR(flctl));
-
- dma_unmap_single(chan->device->dev, dma_addr, len, dir);
-
- /* ret == 0 is success */
- return ret;
-}
-
-static void read_datareg(struct sh_flctl *flctl, int offset)
-{
- unsigned long data;
- unsigned long *buf = (unsigned long *)&flctl->done_buff[offset];
-
- wait_completion(flctl);
-
- data = readl(FLDATAR(flctl));
- *buf = le32_to_cpu(data);
-}
-
-static void read_fiforeg(struct sh_flctl *flctl, int rlen, int offset)
-{
- int i, len_4align;
- unsigned long *buf = (unsigned long *)&flctl->done_buff[offset];
-
- len_4align = (rlen + 3) / 4;
-
- /* initiate DMA transfer */
- if (flctl->chan_fifo0_rx && rlen >= 32 &&
- !flctl_dma_fifo0_transfer(flctl, buf, rlen, DMA_FROM_DEVICE))
- goto convert; /* DMA success */
-
- /* do polling transfer */
- for (i = 0; i < len_4align; i++) {
- wait_rfifo_ready(flctl);
- buf[i] = readl(FLDTFIFO(flctl));
- }
-
-convert:
- for (i = 0; i < len_4align; i++)
- buf[i] = be32_to_cpu(buf[i]);
-}
-
-static enum flctl_ecc_res_t read_ecfiforeg
- (struct sh_flctl *flctl, uint8_t *buff, int sector)
-{
- int i;
- enum flctl_ecc_res_t res;
- unsigned long *ecc_buf = (unsigned long *)buff;
-
- res = wait_recfifo_ready(flctl , sector);
-
- if (res != FL_ERROR) {
- for (i = 0; i < 4; i++) {
- ecc_buf[i] = readl(FLECFIFO(flctl));
- ecc_buf[i] = be32_to_cpu(ecc_buf[i]);
- }
- }
-
- return res;
-}
-
-static void write_fiforeg(struct sh_flctl *flctl, int rlen,
- unsigned int offset)
-{
- int i, len_4align;
- unsigned long *buf = (unsigned long *)&flctl->done_buff[offset];
-
- len_4align = (rlen + 3) / 4;
- for (i = 0; i < len_4align; i++) {
- wait_wfifo_ready(flctl);
- writel(cpu_to_be32(buf[i]), FLDTFIFO(flctl));
- }
-}
-
-static void write_ec_fiforeg(struct sh_flctl *flctl, int rlen,
- unsigned int offset)
-{
- int i, len_4align;
- unsigned long *buf = (unsigned long *)&flctl->done_buff[offset];
-
- len_4align = (rlen + 3) / 4;
-
- for (i = 0; i < len_4align; i++)
- buf[i] = cpu_to_be32(buf[i]);
-
- /* initiate DMA transfer */
- if (flctl->chan_fifo0_tx && rlen >= 32 &&
- !flctl_dma_fifo0_transfer(flctl, buf, rlen, DMA_TO_DEVICE))
- return; /* DMA success */
-
- /* do polling transfer */
- for (i = 0; i < len_4align; i++) {
- wait_wecfifo_ready(flctl);
- writel(buf[i], FLECFIFO(flctl));
- }
-}
-
-static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_val)
-{
- struct sh_flctl *flctl = mtd_to_flctl(mtd);
- uint32_t flcmncr_val = flctl->flcmncr_base & ~SEL_16BIT;
- uint32_t flcmdcr_val, addr_len_bytes = 0;
-
- /* Set SNAND bit if page size is 2048byte */
- if (flctl->page_size)
- flcmncr_val |= SNAND_E;
- else
- flcmncr_val &= ~SNAND_E;
-
- /* default FLCMDCR val */
- flcmdcr_val = DOCMD1_E | DOADR_E;
-
- /* Set for FLCMDCR */
- switch (cmd) {
- case NAND_CMD_ERASE1:
- addr_len_bytes = flctl->erase_ADRCNT;
- flcmdcr_val |= DOCMD2_E;
- break;
- case NAND_CMD_READ0:
- case NAND_CMD_READOOB:
- case NAND_CMD_RNDOUT:
- addr_len_bytes = flctl->rw_ADRCNT;
- flcmdcr_val |= CDSRC_E;
- if (flctl->chip.options & NAND_BUSWIDTH_16)
- flcmncr_val |= SEL_16BIT;
- break;
- case NAND_CMD_SEQIN:
- /* This case is that cmd is READ0 or READ1 or READ00 */
- flcmdcr_val &= ~DOADR_E; /* ONLY execute 1st cmd */
- break;
- case NAND_CMD_PAGEPROG:
- addr_len_bytes = flctl->rw_ADRCNT;
- flcmdcr_val |= DOCMD2_E | CDSRC_E | SELRW;
- if (flctl->chip.options & NAND_BUSWIDTH_16)
- flcmncr_val |= SEL_16BIT;
- break;
- case NAND_CMD_READID:
- flcmncr_val &= ~SNAND_E;
- flcmdcr_val |= CDSRC_E;
- addr_len_bytes = ADRCNT_1;
- break;
- case NAND_CMD_STATUS:
- case NAND_CMD_RESET:
- flcmncr_val &= ~SNAND_E;
- flcmdcr_val &= ~(DOADR_E | DOSR_E);
- break;
- default:
- break;
- }
-
- /* Set address bytes parameter */
- flcmdcr_val |= addr_len_bytes;
-
- /* Now actually write */
- writel(flcmncr_val, FLCMNCR(flctl));
- writel(flcmdcr_val, FLCMDCR(flctl));
- writel(flcmcdr_val, FLCMCDR(flctl));
-}
-
-static int flctl_read_page_hwecc(struct nand_chip *chip, uint8_t *buf,
- int oob_required, int page)
-{
- struct mtd_info *mtd = nand_to_mtd(chip);
-
- nand_read_page_op(chip, page, 0, buf, mtd->writesize);
- if (oob_required)
- chip->legacy.read_buf(chip, chip->oob_poi, mtd->oobsize);
- return 0;
-}
-
-static int flctl_write_page_hwecc(struct nand_chip *chip, const uint8_t *buf,
- int oob_required, int page)
-{
- struct mtd_info *mtd = nand_to_mtd(chip);
-
- nand_prog_page_begin_op(chip, page, 0, buf, mtd->writesize);
- chip->legacy.write_buf(chip, chip->oob_poi, mtd->oobsize);
- return nand_prog_page_end_op(chip);
-}
-
-static void execmd_read_page_sector(struct mtd_info *mtd, int page_addr)
-{
- struct sh_flctl *flctl = mtd_to_flctl(mtd);
- int sector, page_sectors;
- enum flctl_ecc_res_t ecc_result;
-
- page_sectors = flctl->page_size ? 4 : 1;
-
- set_cmd_regs(mtd, NAND_CMD_READ0,
- (NAND_CMD_READSTART << 8) | NAND_CMD_READ0);
-
- writel(readl(FLCMNCR(flctl)) | ACM_SACCES_MODE | _4ECCCORRECT,
- FLCMNCR(flctl));
- writel(readl(FLCMDCR(flctl)) | page_sectors, FLCMDCR(flctl));
- writel(page_addr << 2, FLADR(flctl));
-
- empty_fifo(flctl);
- start_translation(flctl);
-
- for (sector = 0; sector < page_sectors; sector++) {
- read_fiforeg(flctl, 512, 512 * sector);
-
- ecc_result = read_ecfiforeg(flctl,
- &flctl->done_buff[mtd->writesize + 16 * sector],
- sector);
-
- switch (ecc_result) {
- case FL_REPAIRABLE:
- dev_info(&flctl->pdev->dev,
- "applied ecc on page 0x%x", page_addr);
- mtd->ecc_stats.corrected++;
- break;
- case FL_ERROR:
- dev_warn(&flctl->pdev->dev,
- "page 0x%x contains corrupted data\n",
- page_addr);
- mtd->ecc_stats.failed++;
- break;
- default:
- ;
- }
- }
-
- wait_completion(flctl);
-
- writel(readl(FLCMNCR(flctl)) & ~(ACM_SACCES_MODE | _4ECCCORRECT),
- FLCMNCR(flctl));
-}
-
-static void execmd_read_oob(struct mtd_info *mtd, int page_addr)
-{
- struct sh_flctl *flctl = mtd_to_flctl(mtd);
- int page_sectors = flctl->page_size ? 4 : 1;
- int i;
-
- set_cmd_regs(mtd, NAND_CMD_READ0,
- (NAND_CMD_READSTART << 8) | NAND_CMD_READ0);
-
- empty_fifo(flctl);
-
- for (i = 0; i < page_sectors; i++) {
- set_addr(mtd, (512 + 16) * i + 512 , page_addr);
- writel(16, FLDTCNTR(flctl));
-
- start_translation(flctl);
- read_fiforeg(flctl, 16, 16 * i);
- wait_completion(flctl);
- }
-}
-
-static void execmd_write_page_sector(struct mtd_info *mtd)
-{
- struct sh_flctl *flctl = mtd_to_flctl(mtd);
- int page_addr = flctl->seqin_page_addr;
- int sector, page_sectors;
-
- page_sectors = flctl->page_size ? 4 : 1;
-
- set_cmd_regs(mtd, NAND_CMD_PAGEPROG,
- (NAND_CMD_PAGEPROG << 8) | NAND_CMD_SEQIN);
-
- empty_fifo(flctl);
- writel(readl(FLCMNCR(flctl)) | ACM_SACCES_MODE, FLCMNCR(flctl));
- writel(readl(FLCMDCR(flctl)) | page_sectors, FLCMDCR(flctl));
- writel(page_addr << 2, FLADR(flctl));
- start_translation(flctl);
-
- for (sector = 0; sector < page_sectors; sector++) {
- write_fiforeg(flctl, 512, 512 * sector);
- write_ec_fiforeg(flctl, 16, mtd->writesize + 16 * sector);
- }
-
- wait_completion(flctl);
- writel(readl(FLCMNCR(flctl)) & ~ACM_SACCES_MODE, FLCMNCR(flctl));
-}
-
-static void execmd_write_oob(struct mtd_info *mtd)
-{
- struct sh_flctl *flctl = mtd_to_flctl(mtd);
- int page_addr = flctl->seqin_page_addr;
- int sector, page_sectors;
-
- page_sectors = flctl->page_size ? 4 : 1;
-
- set_cmd_regs(mtd, NAND_CMD_PAGEPROG,
- (NAND_CMD_PAGEPROG << 8) | NAND_CMD_SEQIN);
-
- for (sector = 0; sector < page_sectors; sector++) {
- empty_fifo(flctl);
- set_addr(mtd, sector * 528 + 512, page_addr);
- writel(16, FLDTCNTR(flctl)); /* set read size */
-
- start_translation(flctl);
- write_fiforeg(flctl, 16, 16 * sector);
- wait_completion(flctl);
- }
-}
-
-static void flctl_cmdfunc(struct nand_chip *chip, unsigned int command,
- int column, int page_addr)
-{
- struct mtd_info *mtd = nand_to_mtd(chip);
- struct sh_flctl *flctl = mtd_to_flctl(mtd);
- uint32_t read_cmd = 0;
-
- pm_runtime_get_sync(&flctl->pdev->dev);
-
- flctl->read_bytes = 0;
- if (command != NAND_CMD_PAGEPROG)
- flctl->index = 0;
-
- switch (command) {
- case NAND_CMD_READ1:
- case NAND_CMD_READ0:
- if (flctl->hwecc) {
- /* read page with hwecc */
- execmd_read_page_sector(mtd, page_addr);
- break;
- }
- if (flctl->page_size)
- set_cmd_regs(mtd, command, (NAND_CMD_READSTART << 8)
- | command);
- else
- set_cmd_regs(mtd, command, command);
-
- set_addr(mtd, 0, page_addr);
-
- flctl->read_bytes = mtd->writesize + mtd->oobsize;
- if (flctl->chip.options & NAND_BUSWIDTH_16)
- column >>= 1;
- flctl->index += column;
- goto read_normal_exit;
-
- case NAND_CMD_READOOB:
- if (flctl->hwecc) {
- /* read page with hwecc */
- execmd_read_oob(mtd, page_addr);
- break;
- }
-
- if (flctl->page_size) {
- set_cmd_regs(mtd, command, (NAND_CMD_READSTART << 8)
- | NAND_CMD_READ0);
- set_addr(mtd, mtd->writesize, page_addr);
- } else {
- set_cmd_regs(mtd, command, command);
- set_addr(mtd, 0, page_addr);
- }
- flctl->read_bytes = mtd->oobsize;
- goto read_normal_exit;
-
- case NAND_CMD_RNDOUT:
- if (flctl->hwecc)
- break;
-
- if (flctl->page_size)
- set_cmd_regs(mtd, command, (NAND_CMD_RNDOUTSTART << 8)
- | command);
- else
- set_cmd_regs(mtd, command, command);
-
- set_addr(mtd, column, 0);
-
- flctl->read_bytes = mtd->writesize + mtd->oobsize - column;
- goto read_normal_exit;
-
- case NAND_CMD_READID:
- set_cmd_regs(mtd, command, command);
-
- /* READID is always performed using an 8-bit bus */
- if (flctl->chip.options & NAND_BUSWIDTH_16)
- column <<= 1;
- set_addr(mtd, column, 0);
-
- flctl->read_bytes = 8;
- writel(flctl->read_bytes, FLDTCNTR(flctl)); /* set read size */
- empty_fifo(flctl);
- start_translation(flctl);
- read_fiforeg(flctl, flctl->read_bytes, 0);
- wait_completion(flctl);
- break;
-
- case NAND_CMD_ERASE1:
- flctl->erase1_page_addr = page_addr;
- break;
-
- case NAND_CMD_ERASE2:
- set_cmd_regs(mtd, NAND_CMD_ERASE1,
- (command << 8) | NAND_CMD_ERASE1);
- set_addr(mtd, -1, flctl->erase1_page_addr);
- start_translation(flctl);
- wait_completion(flctl);
- break;
-
- case NAND_CMD_SEQIN:
- if (!flctl->page_size) {
- /* output read command */
- if (column >= mtd->writesize) {
- column -= mtd->writesize;
- read_cmd = NAND_CMD_READOOB;
- } else if (column < 256) {
- read_cmd = NAND_CMD_READ0;
- } else {
- column -= 256;
- read_cmd = NAND_CMD_READ1;
- }
- }
- flctl->seqin_column = column;
- flctl->seqin_page_addr = page_addr;
- flctl->seqin_read_cmd = read_cmd;
- break;
-
- case NAND_CMD_PAGEPROG:
- empty_fifo(flctl);
- if (!flctl->page_size) {
- set_cmd_regs(mtd, NAND_CMD_SEQIN,
- flctl->seqin_read_cmd);
- set_addr(mtd, -1, -1);
- writel(0, FLDTCNTR(flctl)); /* set 0 size */
- start_translation(flctl);
- wait_completion(flctl);
- }
- if (flctl->hwecc) {
- /* write page with hwecc */
- if (flctl->seqin_column == mtd->writesize)
- execmd_write_oob(mtd);
- else if (!flctl->seqin_column)
- execmd_write_page_sector(mtd);
- else
- pr_err("Invalid address !?\n");
- break;
- }
- set_cmd_regs(mtd, command, (command << 8) | NAND_CMD_SEQIN);
- set_addr(mtd, flctl->seqin_column, flctl->seqin_page_addr);
- writel(flctl->index, FLDTCNTR(flctl)); /* set write size */
- start_translation(flctl);
- write_fiforeg(flctl, flctl->index, 0);
- wait_completion(flctl);
- break;
-
- case NAND_CMD_STATUS:
- set_cmd_regs(mtd, command, command);
- set_addr(mtd, -1, -1);
-
- flctl->read_bytes = 1;
- writel(flctl->read_bytes, FLDTCNTR(flctl)); /* set read size */
- start_translation(flctl);
- read_datareg(flctl, 0); /* read and end */
- break;
-
- case NAND_CMD_RESET:
- set_cmd_regs(mtd, command, command);
- set_addr(mtd, -1, -1);
-
- writel(0, FLDTCNTR(flctl)); /* set 0 size */
- start_translation(flctl);
- wait_completion(flctl);
- break;
-
- default:
- break;
- }
- goto runtime_exit;
-
-read_normal_exit:
- writel(flctl->read_bytes, FLDTCNTR(flctl)); /* set read size */
- empty_fifo(flctl);
- start_translation(flctl);
- read_fiforeg(flctl, flctl->read_bytes, 0);
- wait_completion(flctl);
-runtime_exit:
- pm_runtime_put_sync(&flctl->pdev->dev);
- return;
-}
-
-static void flctl_select_chip(struct nand_chip *chip, int chipnr)
-{
- struct sh_flctl *flctl = mtd_to_flctl(nand_to_mtd(chip));
- int ret;
-
- switch (chipnr) {
- case -1:
- flctl->flcmncr_base &= ~CE0_ENABLE;
-
- pm_runtime_get_sync(&flctl->pdev->dev);
- writel(flctl->flcmncr_base, FLCMNCR(flctl));
-
- if (flctl->qos_request) {
- dev_pm_qos_remove_request(&flctl->pm_qos);
- flctl->qos_request = 0;
- }
-
- pm_runtime_put_sync(&flctl->pdev->dev);
- break;
- case 0:
- flctl->flcmncr_base |= CE0_ENABLE;
-
- if (!flctl->qos_request) {
- ret = dev_pm_qos_add_request(&flctl->pdev->dev,
- &flctl->pm_qos,
- DEV_PM_QOS_RESUME_LATENCY,
- 100);
- if (ret < 0)
- dev_err(&flctl->pdev->dev,
- "PM QoS request failed: %d\n", ret);
- flctl->qos_request = 1;
- }
-
- if (flctl->holden) {
- pm_runtime_get_sync(&flctl->pdev->dev);
- writel(HOLDEN, FLHOLDCR(flctl));
- pm_runtime_put_sync(&flctl->pdev->dev);
- }
- break;
- default:
- BUG();
- }
-}
-
-static void flctl_write_buf(struct nand_chip *chip, const uint8_t *buf, int len)
-{
- struct sh_flctl *flctl = mtd_to_flctl(nand_to_mtd(chip));
-
- memcpy(&flctl->done_buff[flctl->index], buf, len);
- flctl->index += len;
-}
-
-static uint8_t flctl_read_byte(struct nand_chip *chip)
-{
- struct sh_flctl *flctl = mtd_to_flctl(nand_to_mtd(chip));
- uint8_t data;
-
- data = flctl->done_buff[flctl->index];
- flctl->index++;
- return data;
-}
-
-static void flctl_read_buf(struct nand_chip *chip, uint8_t *buf, int len)
-{
- struct sh_flctl *flctl = mtd_to_flctl(nand_to_mtd(chip));
-
- memcpy(buf, &flctl->done_buff[flctl->index], len);
- flctl->index += len;
-}
-
-static int flctl_chip_attach_chip(struct nand_chip *chip)
-{
- u64 targetsize = nanddev_target_size(&chip->base);
- struct mtd_info *mtd = nand_to_mtd(chip);
- struct sh_flctl *flctl = mtd_to_flctl(mtd);
-
- /*
- * NAND_BUSWIDTH_16 may have been set by nand_scan_ident().
- * Add the SEL_16BIT flag in flctl->flcmncr_base.
- */
- if (chip->options & NAND_BUSWIDTH_16)
- flctl->flcmncr_base |= SEL_16BIT;
-
- if (mtd->writesize == 512) {
- flctl->page_size = 0;
- if (targetsize > (32 << 20)) {
- /* big than 32MB */
- flctl->rw_ADRCNT = ADRCNT_4;
- flctl->erase_ADRCNT = ADRCNT_3;
- } else if (targetsize > (2 << 16)) {
- /* big than 128KB */
- flctl->rw_ADRCNT = ADRCNT_3;
- flctl->erase_ADRCNT = ADRCNT_2;
- } else {
- flctl->rw_ADRCNT = ADRCNT_2;
- flctl->erase_ADRCNT = ADRCNT_1;
- }
- } else {
- flctl->page_size = 1;
- if (targetsize > (128 << 20)) {
- /* big than 128MB */
- flctl->rw_ADRCNT = ADRCNT2_E;
- flctl->erase_ADRCNT = ADRCNT_3;
- } else if (targetsize > (8 << 16)) {
- /* big than 512KB */
- flctl->rw_ADRCNT = ADRCNT_4;
- flctl->erase_ADRCNT = ADRCNT_2;
- } else {
- flctl->rw_ADRCNT = ADRCNT_3;
- flctl->erase_ADRCNT = ADRCNT_1;
- }
- }
-
- if (flctl->hwecc) {
- if (mtd->writesize == 512) {
- mtd_set_ooblayout(mtd, &flctl_4secc_oob_smallpage_ops);
- chip->badblock_pattern = &flctl_4secc_smallpage;
- } else {
- mtd_set_ooblayout(mtd, &flctl_4secc_oob_largepage_ops);
- chip->badblock_pattern = &flctl_4secc_largepage;
- }
-
- chip->ecc.size = 512;
- chip->ecc.bytes = 10;
- chip->ecc.strength = 4;
- chip->ecc.read_page = flctl_read_page_hwecc;
- chip->ecc.write_page = flctl_write_page_hwecc;
- chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST;
-
- /* 4 symbols ECC enabled */
- flctl->flcmncr_base |= _4ECCEN;
- } else {
- chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT;
- chip->ecc.algo = NAND_ECC_ALGO_HAMMING;
- }
-
- return 0;
-}
-
-static const struct nand_controller_ops flctl_nand_controller_ops = {
- .attach_chip = flctl_chip_attach_chip,
-};
-
-static irqreturn_t flctl_handle_flste(int irq, void *dev_id)
-{
- struct sh_flctl *flctl = dev_id;
-
- dev_err(&flctl->pdev->dev, "flste irq: %x\n", readl(FLINTDMACR(flctl)));
- writel(flctl->flintdmacr_base, FLINTDMACR(flctl));
-
- return IRQ_HANDLED;
-}
-
-struct flctl_soc_config {
- unsigned long flcmncr_val;
- unsigned has_hwecc:1;
- unsigned use_holden:1;
-};
-
-static struct flctl_soc_config flctl_sh7372_config = {
- .flcmncr_val = CLK_16B_12L_4H | TYPESEL_SET | SHBUSSEL,
- .has_hwecc = 1,
- .use_holden = 1,
-};
-
-static const struct of_device_id of_flctl_match[] = {
- { .compatible = "renesas,shmobile-flctl-sh7372",
- .data = &flctl_sh7372_config },
- {},
-};
-MODULE_DEVICE_TABLE(of, of_flctl_match);
-
-static struct sh_flctl_platform_data *flctl_parse_dt(struct device *dev)
-{
- const struct flctl_soc_config *config;
- struct sh_flctl_platform_data *pdata;
-
- config = of_device_get_match_data(dev);
- if (!config) {
- dev_err(dev, "%s: no OF configuration attached\n", __func__);
- return NULL;
- }
-
- pdata = devm_kzalloc(dev, sizeof(struct sh_flctl_platform_data),
- GFP_KERNEL);
- if (!pdata)
- return NULL;
-
- /* set SoC specific options */
- pdata->flcmncr_val = config->flcmncr_val;
- pdata->has_hwecc = config->has_hwecc;
- pdata->use_holden = config->use_holden;
-
- return pdata;
-}
-
-static int flctl_probe(struct platform_device *pdev)
-{
- struct resource *res;
- struct sh_flctl *flctl;
- struct mtd_info *flctl_mtd;
- struct nand_chip *nand;
- struct sh_flctl_platform_data *pdata;
- int ret;
- int irq;
-
- flctl = devm_kzalloc(&pdev->dev, sizeof(struct sh_flctl), GFP_KERNEL);
- if (!flctl)
- return -ENOMEM;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- flctl->reg = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(flctl->reg))
- return PTR_ERR(flctl->reg);
- flctl->fifo = res->start + 0x24; /* FLDTFIFO */
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- return irq;
-
- ret = devm_request_irq(&pdev->dev, irq, flctl_handle_flste, IRQF_SHARED,
- "flste", flctl);
- if (ret) {
- dev_err(&pdev->dev, "request interrupt failed.\n");
- return ret;
- }
-
- if (pdev->dev.of_node)
- pdata = flctl_parse_dt(&pdev->dev);
- else
- pdata = dev_get_platdata(&pdev->dev);
-
- if (!pdata) {
- dev_err(&pdev->dev, "no setup data defined\n");
- return -EINVAL;
- }
-
- platform_set_drvdata(pdev, flctl);
- nand = &flctl->chip;
- flctl_mtd = nand_to_mtd(nand);
- nand_set_flash_node(nand, pdev->dev.of_node);
- flctl_mtd->dev.parent = &pdev->dev;
- flctl->pdev = pdev;
- flctl->hwecc = pdata->has_hwecc;
- flctl->holden = pdata->use_holden;
- flctl->flcmncr_base = pdata->flcmncr_val;
- flctl->flintdmacr_base = flctl->hwecc ? (STERINTE | ECERB) : STERINTE;
-
- /* Set address of hardware control function */
- /* 20 us command delay time */
- nand->legacy.chip_delay = 20;
-
- nand->legacy.read_byte = flctl_read_byte;
- nand->legacy.write_buf = flctl_write_buf;
- nand->legacy.read_buf = flctl_read_buf;
- nand->legacy.select_chip = flctl_select_chip;
- nand->legacy.cmdfunc = flctl_cmdfunc;
- nand->legacy.set_features = nand_get_set_features_notsupp;
- nand->legacy.get_features = nand_get_set_features_notsupp;
-
- if (pdata->flcmncr_val & SEL_16BIT)
- nand->options |= NAND_BUSWIDTH_16;
-
- nand->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
-
- pm_runtime_enable(&pdev->dev);
- pm_runtime_resume(&pdev->dev);
-
- flctl_setup_dma(flctl);
-
- nand->legacy.dummy_controller.ops = &flctl_nand_controller_ops;
- ret = nand_scan(nand, 1);
- if (ret)
- goto err_chip;
-
- ret = mtd_device_register(flctl_mtd, pdata->parts, pdata->nr_parts);
- if (ret)
- goto cleanup_nand;
-
- return 0;
-
-cleanup_nand:
- nand_cleanup(nand);
-err_chip:
- flctl_release_dma(flctl);
- pm_runtime_disable(&pdev->dev);
- return ret;
-}
-
-static int flctl_remove(struct platform_device *pdev)
-{
- struct sh_flctl *flctl = platform_get_drvdata(pdev);
- struct nand_chip *chip = &flctl->chip;
- int ret;
-
- flctl_release_dma(flctl);
- ret = mtd_device_unregister(nand_to_mtd(chip));
- WARN_ON(ret);
- nand_cleanup(chip);
- pm_runtime_disable(&pdev->dev);
-
- return 0;
-}
-
-static struct platform_driver flctl_driver = {
- .remove = flctl_remove,
- .driver = {
- .name = "sh_flctl",
- .of_match_table = of_flctl_match,
- },
-};
-
-module_platform_driver_probe(flctl_driver, flctl_probe);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Yoshihiro Shimoda");
-MODULE_DESCRIPTION("SuperH FLCTL driver");
-MODULE_ALIAS("platform:sh_flctl");
diff --git a/include/linux/mtd/sh_flctl.h b/include/linux/mtd/sh_flctl.h
deleted file mode 100644
index 78fc2d4218c808..00000000000000
--- a/include/linux/mtd/sh_flctl.h
+++ /dev/null
@@ -1,180 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0
- *
- * SuperH FLCTL nand controller
- *
- * Copyright © 2008 Renesas Solutions Corp.
- */
-
-#ifndef __SH_FLCTL_H__
-#define __SH_FLCTL_H__
-
-#include <linux/completion.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/rawnand.h>
-#include <linux/mtd/partitions.h>
-#include <linux/pm_qos.h>
-
-/* FLCTL registers */
-#define FLCMNCR(f) (f->reg + 0x0)
-#define FLCMDCR(f) (f->reg + 0x4)
-#define FLCMCDR(f) (f->reg + 0x8)
-#define FLADR(f) (f->reg + 0xC)
-#define FLADR2(f) (f->reg + 0x3C)
-#define FLDATAR(f) (f->reg + 0x10)
-#define FLDTCNTR(f) (f->reg + 0x14)
-#define FLINTDMACR(f) (f->reg + 0x18)
-#define FLBSYTMR(f) (f->reg + 0x1C)
-#define FLBSYCNT(f) (f->reg + 0x20)
-#define FLDTFIFO(f) (f->reg + 0x24)
-#define FLECFIFO(f) (f->reg + 0x28)
-#define FLTRCR(f) (f->reg + 0x2C)
-#define FLHOLDCR(f) (f->reg + 0x38)
-#define FL4ECCRESULT0(f) (f->reg + 0x80)
-#define FL4ECCRESULT1(f) (f->reg + 0x84)
-#define FL4ECCRESULT2(f) (f->reg + 0x88)
-#define FL4ECCRESULT3(f) (f->reg + 0x8C)
-#define FL4ECCCR(f) (f->reg + 0x90)
-#define FL4ECCCNT(f) (f->reg + 0x94)
-#define FLERRADR(f) (f->reg + 0x98)
-
-/* FLCMNCR control bits */
-#define _4ECCCNTEN (0x1 << 24)
-#define _4ECCEN (0x1 << 23)
-#define _4ECCCORRECT (0x1 << 22)
-#define SHBUSSEL (0x1 << 20)
-#define SEL_16BIT (0x1 << 19)
-#define SNAND_E (0x1 << 18) /* SNAND (0=512 1=2048)*/
-#define QTSEL_E (0x1 << 17)
-#define ENDIAN (0x1 << 16) /* 1 = little endian */
-#define FCKSEL_E (0x1 << 15)
-#define ACM_SACCES_MODE (0x01 << 10)
-#define NANWF_E (0x1 << 9)
-#define SE_D (0x1 << 8) /* Spare area disable */
-#define CE1_ENABLE (0x1 << 4) /* Chip Enable 1 */
-#define CE0_ENABLE (0x1 << 3) /* Chip Enable 0 */
-#define TYPESEL_SET (0x1 << 0)
-
-/*
- * Clock settings using the PULSEx registers from FLCMNCR
- *
- * Some hardware uses bits called PULSEx instead of FCKSEL_E and QTSEL_E
- * to control the clock divider used between the High-Speed Peripheral Clock
- * and the FLCTL internal clock. If so, use CLK_8_BIT_xxx for connecting 8 bit
- * and CLK_16_BIT_xxx for connecting 16 bit bus bandwith NAND chips. For the 16
- * bit version the divider is seperate for the pulse width of high and low
- * signals.
- */
-#define PULSE3 (0x1 << 27)
-#define PULSE2 (0x1 << 17)
-#define PULSE1 (0x1 << 15)
-#define PULSE0 (0x1 << 9)
-#define CLK_8B_0_5 PULSE1
-#define CLK_8B_1 0x0
-#define CLK_8B_1_5 (PULSE1 | PULSE2)
-#define CLK_8B_2 PULSE0
-#define CLK_8B_3 (PULSE0 | PULSE1 | PULSE2)
-#define CLK_8B_4 (PULSE0 | PULSE2)
-#define CLK_16B_6L_2H PULSE0
-#define CLK_16B_9L_3H (PULSE0 | PULSE1 | PULSE2)
-#define CLK_16B_12L_4H (PULSE0 | PULSE2)
-
-/* FLCMDCR control bits */
-#define ADRCNT2_E (0x1 << 31) /* 5byte address enable */
-#define ADRMD_E (0x1 << 26) /* Sector address access */
-#define CDSRC_E (0x1 << 25) /* Data buffer selection */
-#define DOSR_E (0x1 << 24) /* Status read check */
-#define SELRW (0x1 << 21) /* 0:read 1:write */
-#define DOADR_E (0x1 << 20) /* Address stage execute */
-#define ADRCNT_1 (0x00 << 18) /* Address data bytes: 1byte */
-#define ADRCNT_2 (0x01 << 18) /* Address data bytes: 2byte */
-#define ADRCNT_3 (0x02 << 18) /* Address data bytes: 3byte */
-#define ADRCNT_4 (0x03 << 18) /* Address data bytes: 4byte */
-#define DOCMD2_E (0x1 << 17) /* 2nd cmd stage execute */
-#define DOCMD1_E (0x1 << 16) /* 1st cmd stage execute */
-
-/* FLINTDMACR control bits */
-#define ESTERINTE (0x1 << 24) /* ECC error interrupt enable */
-#define AC1CLR (0x1 << 19) /* ECC FIFO clear */
-#define AC0CLR (0x1 << 18) /* Data FIFO clear */
-#define DREQ0EN (0x1 << 16) /* FLDTFIFODMA Request Enable */
-#define ECERB (0x1 << 9) /* ECC error */
-#define STERB (0x1 << 8) /* Status error */
-#define STERINTE (0x1 << 4) /* Status error enable */
-
-/* FLTRCR control bits */
-#define TRSTRT (0x1 << 0) /* translation start */
-#define TREND (0x1 << 1) /* translation end */
-
-/*
- * FLHOLDCR control bits
- *
- * HOLDEN: Bus Occupancy Enable (inverted)
- * Enable this bit when the external bus might be used in between transfers.
- * If not set and the bus gets used by other modules, a deadlock occurs.
- */
-#define HOLDEN (0x1 << 0)
-
-/* FL4ECCCR control bits */
-#define _4ECCFA (0x1 << 2) /* 4 symbols correct fault */
-#define _4ECCEND (0x1 << 1) /* 4 symbols end */
-#define _4ECCEXST (0x1 << 0) /* 4 symbols exist */
-
-#define LOOP_TIMEOUT_MAX 0x00010000
-
-enum flctl_ecc_res_t {
- FL_SUCCESS,
- FL_REPAIRABLE,
- FL_ERROR,
- FL_TIMEOUT
-};
-
-struct dma_chan;
-
-struct sh_flctl {
- struct nand_chip chip;
- struct platform_device *pdev;
- struct dev_pm_qos_request pm_qos;
- void __iomem *reg;
- resource_size_t fifo;
-
- uint8_t done_buff[2048 + 64]; /* max size 2048 + 64 */
- int read_bytes;
- unsigned int index;
- int seqin_column; /* column in SEQIN cmd */
- int seqin_page_addr; /* page_addr in SEQIN cmd */
- uint32_t seqin_read_cmd; /* read cmd in SEQIN cmd */
- int erase1_page_addr; /* page_addr in ERASE1 cmd */
- uint32_t erase_ADRCNT; /* bits of FLCMDCR in ERASE1 cmd */
- uint32_t rw_ADRCNT; /* bits of FLCMDCR in READ WRITE cmd */
- uint32_t flcmncr_base; /* base value of FLCMNCR */
- uint32_t flintdmacr_base; /* irq enable bits */
-
- unsigned page_size:1; /* NAND page size (0 = 512, 1 = 2048) */
- unsigned hwecc:1; /* Hardware ECC (0 = disabled, 1 = enabled) */
- unsigned holden:1; /* Hardware has FLHOLDCR and HOLDEN is set */
- unsigned qos_request:1; /* QoS request to prevent deep power shutdown */
-
- /* DMA related objects */
- struct dma_chan *chan_fifo0_rx;
- struct dma_chan *chan_fifo0_tx;
- struct completion dma_complete;
-};
-
-struct sh_flctl_platform_data {
- struct mtd_partition *parts;
- int nr_parts;
- unsigned long flcmncr_val;
-
- unsigned has_hwecc:1;
- unsigned use_holden:1;
-
- unsigned int slave_id_fifo0_tx;
- unsigned int slave_id_fifo0_rx;
-};
-
-static inline struct sh_flctl *mtd_to_flctl(struct mtd_info *mtdinfo)
-{
- return container_of(mtd_to_nand(mtdinfo), struct sh_flctl, chip);
-}
-
-#endif /* __SH_FLCTL_H__ */
--
2.39.0
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