mtd: delete nomadik_nand driver
The nomadik_nand driver is really just a subset of the FSMC NAND driver, and there are no users anymore so let's delete it. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
This commit is contained in:
Linus Walleij
Artem Bityutskiy
parent
41863f730f
commit
fc05d5a30d
@ -526,12 +526,6 @@ config MTD_NAND_MXC
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This enables the driver for the NAND flash controller on the
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This enables the driver for the NAND flash controller on the
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MXC processors.
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MXC processors.
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config MTD_NAND_NOMADIK
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tristate "ST Nomadik 8815 NAND support"
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depends on ARCH_NOMADIK
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help
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Driver for the NAND flash controller on the Nomadik, with ECC.
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config MTD_NAND_SH_FLCTL
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config MTD_NAND_SH_FLCTL
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tristate "Support for NAND on Renesas SuperH FLCTL"
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tristate "Support for NAND on Renesas SuperH FLCTL"
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depends on SUPERH || ARCH_SHMOBILE
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depends on SUPERH || ARCH_SHMOBILE
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@ -49,7 +49,6 @@ obj-$(CONFIG_MTD_NAND_MXC) += mxc_nand.o
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obj-$(CONFIG_MTD_NAND_SOCRATES) += socrates_nand.o
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obj-$(CONFIG_MTD_NAND_SOCRATES) += socrates_nand.o
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obj-$(CONFIG_MTD_NAND_TXX9NDFMC) += txx9ndfmc.o
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obj-$(CONFIG_MTD_NAND_TXX9NDFMC) += txx9ndfmc.o
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obj-$(CONFIG_MTD_NAND_NUC900) += nuc900_nand.o
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obj-$(CONFIG_MTD_NAND_NUC900) += nuc900_nand.o
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obj-$(CONFIG_MTD_NAND_NOMADIK) += nomadik_nand.o
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obj-$(CONFIG_MTD_NAND_MPC5121_NFC) += mpc5121_nfc.o
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obj-$(CONFIG_MTD_NAND_MPC5121_NFC) += mpc5121_nfc.o
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obj-$(CONFIG_MTD_NAND_RICOH) += r852.o
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obj-$(CONFIG_MTD_NAND_RICOH) += r852.o
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obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740_nand.o
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obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740_nand.o
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@ -1,235 +0,0 @@
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/*
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* drivers/mtd/nand/nomadik_nand.c
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*
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* Overview:
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* Driver for on-board NAND flash on Nomadik Platforms
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*
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* Copyright © 2007 STMicroelectronics Pvt. Ltd.
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* Author: Sachin Verma <sachin.verma@st.com>
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*
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* Copyright © 2009 Alessandro Rubini
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/nand.h>
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#include <linux/mtd/nand_ecc.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/partitions.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/platform_data/mtd-nomadik-nand.h>
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#include <mach/fsmc.h>
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#include <mtd/mtd-abi.h>
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struct nomadik_nand_host {
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struct mtd_info mtd;
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struct nand_chip nand;
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void __iomem *data_va;
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void __iomem *cmd_va;
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void __iomem *addr_va;
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struct nand_bbt_descr *bbt_desc;
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};
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static struct nand_ecclayout nomadik_ecc_layout = {
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.eccbytes = 3 * 4,
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.eccpos = { /* each subpage has 16 bytes: pos 2,3,4 hosts ECC */
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0x02, 0x03, 0x04,
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0x12, 0x13, 0x14,
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0x22, 0x23, 0x24,
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0x32, 0x33, 0x34},
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/* let's keep bytes 5,6,7 for us, just in case we change ECC algo */
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.oobfree = { {0x08, 0x08}, {0x18, 0x08}, {0x28, 0x08}, {0x38, 0x08} },
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};
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static void nomadik_ecc_control(struct mtd_info *mtd, int mode)
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{
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/* No need to enable hw ecc, it's on by default */
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}
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static void nomadik_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
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{
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struct nand_chip *nand = mtd->priv;
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struct nomadik_nand_host *host = nand->priv;
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if (cmd == NAND_CMD_NONE)
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return;
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if (ctrl & NAND_CLE)
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writeb(cmd, host->cmd_va);
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else
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writeb(cmd, host->addr_va);
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}
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static int nomadik_nand_probe(struct platform_device *pdev)
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{
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struct nomadik_nand_platform_data *pdata = pdev->dev.platform_data;
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struct nomadik_nand_host *host;
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struct mtd_info *mtd;
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struct nand_chip *nand;
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struct resource *res;
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int ret = 0;
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/* Allocate memory for the device structure (and zero it) */
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host = kzalloc(sizeof(struct nomadik_nand_host), GFP_KERNEL);
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if (!host) {
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dev_err(&pdev->dev, "Failed to allocate device structure.\n");
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return -ENOMEM;
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}
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/* Call the client's init function, if any */
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if (pdata->init)
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ret = pdata->init();
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if (ret < 0) {
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dev_err(&pdev->dev, "Init function failed\n");
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goto err;
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}
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/* ioremap three regions */
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_addr");
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if (!res) {
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ret = -EIO;
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goto err_unmap;
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}
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host->addr_va = ioremap(res->start, resource_size(res));
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_data");
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if (!res) {
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ret = -EIO;
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goto err_unmap;
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}
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host->data_va = ioremap(res->start, resource_size(res));
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_cmd");
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if (!res) {
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ret = -EIO;
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goto err_unmap;
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}
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host->cmd_va = ioremap(res->start, resource_size(res));
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if (!host->addr_va || !host->data_va || !host->cmd_va) {
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ret = -ENOMEM;
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goto err_unmap;
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}
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/* Link all private pointers */
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mtd = &host->mtd;
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nand = &host->nand;
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mtd->priv = nand;
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nand->priv = host;
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host->mtd.owner = THIS_MODULE;
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nand->IO_ADDR_R = host->data_va;
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nand->IO_ADDR_W = host->data_va;
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nand->cmd_ctrl = nomadik_cmd_ctrl;
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/*
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* This stanza declares ECC_HW but uses soft routines. It's because
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* HW claims to make the calculation but not the correction. However,
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* I haven't managed to get the desired data out of it until now.
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*/
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nand->ecc.mode = NAND_ECC_SOFT;
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nand->ecc.layout = &nomadik_ecc_layout;
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nand->ecc.hwctl = nomadik_ecc_control;
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nand->ecc.size = 512;
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nand->ecc.bytes = 3;
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nand->options = pdata->options;
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/*
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* Scan to find existence of the device
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*/
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if (nand_scan(&host->mtd, 1)) {
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ret = -ENXIO;
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goto err_unmap;
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}
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mtd_device_register(&host->mtd, pdata->parts, pdata->nparts);
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platform_set_drvdata(pdev, host);
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return 0;
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err_unmap:
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if (host->cmd_va)
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iounmap(host->cmd_va);
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if (host->data_va)
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iounmap(host->data_va);
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if (host->addr_va)
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iounmap(host->addr_va);
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err:
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kfree(host);
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return ret;
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}
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/*
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* Clean up routine
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*/
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static int nomadik_nand_remove(struct platform_device *pdev)
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{
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struct nomadik_nand_host *host = platform_get_drvdata(pdev);
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struct nomadik_nand_platform_data *pdata = pdev->dev.platform_data;
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if (pdata->exit)
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pdata->exit();
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if (host) {
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nand_release(&host->mtd);
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iounmap(host->cmd_va);
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iounmap(host->data_va);
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iounmap(host->addr_va);
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kfree(host);
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}
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return 0;
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}
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static int nomadik_nand_suspend(struct device *dev)
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{
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struct nomadik_nand_host *host = dev_get_drvdata(dev);
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int ret = 0;
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if (host)
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ret = mtd_suspend(&host->mtd);
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return ret;
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}
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static int nomadik_nand_resume(struct device *dev)
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{
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struct nomadik_nand_host *host = dev_get_drvdata(dev);
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if (host)
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mtd_resume(&host->mtd);
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return 0;
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}
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static const struct dev_pm_ops nomadik_nand_pm_ops = {
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.suspend = nomadik_nand_suspend,
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.resume = nomadik_nand_resume,
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};
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static struct platform_driver nomadik_nand_driver = {
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.probe = nomadik_nand_probe,
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.remove = nomadik_nand_remove,
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.driver = {
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.owner = THIS_MODULE,
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.name = "nomadik_nand",
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.pm = &nomadik_nand_pm_ops,
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},
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};
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module_platform_driver(nomadik_nand_driver);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("ST Microelectronics (sachin.verma@st.com)");
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MODULE_DESCRIPTION("NAND driver for Nomadik Platform");
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@ -1,16 +0,0 @@
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#ifndef __ASM_ARCH_NAND_H
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#define __ASM_ARCH_NAND_H
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struct nomadik_nand_platform_data {
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struct mtd_partition *parts;
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int nparts;
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int options;
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int (*init) (void);
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int (*exit) (void);
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};
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#define NAND_IO_DATA 0x40000000
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#define NAND_IO_CMD 0x40800000
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#define NAND_IO_ADDR 0x41000000
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#endif /* __ASM_ARCH_NAND_H */
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