[PATCH 2/2] mtd: delete nomadik_nand driver
Linus Walleij
linus.walleij at linaro.org
Thu Oct 4 03:28:49 EDT 2012
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.
Cc: Alessandro Rubini <rubini at unipv.it>
Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
---
I'm seeking the MTD maintainer(s) ACK for this patch so I can
merge it through the ARM SoC tree just after switching the
platform to using the FSMC driver.
---
drivers/mtd/nand/Kconfig | 6 -
drivers/mtd/nand/Makefile | 1 -
drivers/mtd/nand/nomadik_nand.c | 235 -------------------------
include/linux/platform_data/mtd-nomadik-nand.h | 16 --
4 files changed, 258 deletions(-)
delete mode 100644 drivers/mtd/nand/nomadik_nand.c
delete mode 100644 include/linux/platform_data/mtd-nomadik-nand.h
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 598cd0a..ec4acae 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -515,12 +515,6 @@ config MTD_NAND_MXC
This enables the driver for the NAND flash controller on the
MXC processors.
-config MTD_NAND_NOMADIK
- tristate "ST Nomadik 8815 NAND support"
- depends on ARCH_NOMADIK
- help
- Driver for the NAND flash controller on the Nomadik, with ECC.
-
config MTD_NAND_SH_FLCTL
tristate "Support for NAND on Renesas SuperH FLCTL"
depends on SUPERH || ARCH_SHMOBILE
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index d4b4d87..4d4e33a 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -45,7 +45,6 @@ obj-$(CONFIG_MTD_NAND_MXC) += mxc_nand.o
obj-$(CONFIG_MTD_NAND_SOCRATES) += socrates_nand.o
obj-$(CONFIG_MTD_NAND_TXX9NDFMC) += txx9ndfmc.o
obj-$(CONFIG_MTD_NAND_NUC900) += nuc900_nand.o
-obj-$(CONFIG_MTD_NAND_NOMADIK) += nomadik_nand.o
obj-$(CONFIG_MTD_NAND_BCM_UMI) += bcm_umi_nand.o nand_bcm_umi.o
obj-$(CONFIG_MTD_NAND_MPC5121_NFC) += mpc5121_nfc.o
obj-$(CONFIG_MTD_NAND_RICOH) += r852.o
diff --git a/drivers/mtd/nand/nomadik_nand.c b/drivers/mtd/nand/nomadik_nand.c
deleted file mode 100644
index 9ee0c4e..0000000
--- a/drivers/mtd/nand/nomadik_nand.c
+++ /dev/null
@@ -1,235 +0,0 @@
-/*
- * drivers/mtd/nand/nomadik_nand.c
- *
- * Overview:
- * Driver for on-board NAND flash on Nomadik Platforms
- *
- * Copyright © 2007 STMicroelectronics Pvt. Ltd.
- * Author: Sachin Verma <sachin.verma at st.com>
- *
- * Copyright © 2009 Alessandro Rubini
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/nand.h>
-#include <linux/mtd/nand_ecc.h>
-#include <linux/platform_device.h>
-#include <linux/mtd/partitions.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/platform_data/mtd-nomadik-nand.h>
-#include <mach/fsmc.h>
-
-#include <mtd/mtd-abi.h>
-
-struct nomadik_nand_host {
- struct mtd_info mtd;
- struct nand_chip nand;
- void __iomem *data_va;
- void __iomem *cmd_va;
- void __iomem *addr_va;
- struct nand_bbt_descr *bbt_desc;
-};
-
-static struct nand_ecclayout nomadik_ecc_layout = {
- .eccbytes = 3 * 4,
- .eccpos = { /* each subpage has 16 bytes: pos 2,3,4 hosts ECC */
- 0x02, 0x03, 0x04,
- 0x12, 0x13, 0x14,
- 0x22, 0x23, 0x24,
- 0x32, 0x33, 0x34},
- /* let's keep bytes 5,6,7 for us, just in case we change ECC algo */
- .oobfree = { {0x08, 0x08}, {0x18, 0x08}, {0x28, 0x08}, {0x38, 0x08} },
-};
-
-static void nomadik_ecc_control(struct mtd_info *mtd, int mode)
-{
- /* No need to enable hw ecc, it's on by default */
-}
-
-static void nomadik_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
-{
- struct nand_chip *nand = mtd->priv;
- struct nomadik_nand_host *host = nand->priv;
-
- if (cmd == NAND_CMD_NONE)
- return;
-
- if (ctrl & NAND_CLE)
- writeb(cmd, host->cmd_va);
- else
- writeb(cmd, host->addr_va);
-}
-
-static int nomadik_nand_probe(struct platform_device *pdev)
-{
- struct nomadik_nand_platform_data *pdata = pdev->dev.platform_data;
- struct nomadik_nand_host *host;
- struct mtd_info *mtd;
- struct nand_chip *nand;
- struct resource *res;
- int ret = 0;
-
- /* Allocate memory for the device structure (and zero it) */
- host = kzalloc(sizeof(struct nomadik_nand_host), GFP_KERNEL);
- if (!host) {
- dev_err(&pdev->dev, "Failed to allocate device structure.\n");
- return -ENOMEM;
- }
-
- /* Call the client's init function, if any */
- if (pdata->init)
- ret = pdata->init();
- if (ret < 0) {
- dev_err(&pdev->dev, "Init function failed\n");
- goto err;
- }
-
- /* ioremap three regions */
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_addr");
- if (!res) {
- ret = -EIO;
- goto err_unmap;
- }
- host->addr_va = ioremap(res->start, resource_size(res));
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_data");
- if (!res) {
- ret = -EIO;
- goto err_unmap;
- }
- host->data_va = ioremap(res->start, resource_size(res));
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_cmd");
- if (!res) {
- ret = -EIO;
- goto err_unmap;
- }
- host->cmd_va = ioremap(res->start, resource_size(res));
-
- if (!host->addr_va || !host->data_va || !host->cmd_va) {
- ret = -ENOMEM;
- goto err_unmap;
- }
-
- /* Link all private pointers */
- mtd = &host->mtd;
- nand = &host->nand;
- mtd->priv = nand;
- nand->priv = host;
-
- host->mtd.owner = THIS_MODULE;
- nand->IO_ADDR_R = host->data_va;
- nand->IO_ADDR_W = host->data_va;
- nand->cmd_ctrl = nomadik_cmd_ctrl;
-
- /*
- * This stanza declares ECC_HW but uses soft routines. It's because
- * HW claims to make the calculation but not the correction. However,
- * I haven't managed to get the desired data out of it until now.
- */
- nand->ecc.mode = NAND_ECC_SOFT;
- nand->ecc.layout = &nomadik_ecc_layout;
- nand->ecc.hwctl = nomadik_ecc_control;
- nand->ecc.size = 512;
- nand->ecc.bytes = 3;
-
- nand->options = pdata->options;
-
- /*
- * Scan to find existence of the device
- */
- if (nand_scan(&host->mtd, 1)) {
- ret = -ENXIO;
- goto err_unmap;
- }
-
- mtd_device_register(&host->mtd, pdata->parts, pdata->nparts);
-
- platform_set_drvdata(pdev, host);
- return 0;
-
- err_unmap:
- if (host->cmd_va)
- iounmap(host->cmd_va);
- if (host->data_va)
- iounmap(host->data_va);
- if (host->addr_va)
- iounmap(host->addr_va);
- err:
- kfree(host);
- return ret;
-}
-
-/*
- * Clean up routine
- */
-static int nomadik_nand_remove(struct platform_device *pdev)
-{
- struct nomadik_nand_host *host = platform_get_drvdata(pdev);
- struct nomadik_nand_platform_data *pdata = pdev->dev.platform_data;
-
- if (pdata->exit)
- pdata->exit();
-
- if (host) {
- nand_release(&host->mtd);
- iounmap(host->cmd_va);
- iounmap(host->data_va);
- iounmap(host->addr_va);
- kfree(host);
- }
- return 0;
-}
-
-static int nomadik_nand_suspend(struct device *dev)
-{
- struct nomadik_nand_host *host = dev_get_drvdata(dev);
- int ret = 0;
- if (host)
- ret = mtd_suspend(&host->mtd);
- return ret;
-}
-
-static int nomadik_nand_resume(struct device *dev)
-{
- struct nomadik_nand_host *host = dev_get_drvdata(dev);
- if (host)
- mtd_resume(&host->mtd);
- return 0;
-}
-
-static const struct dev_pm_ops nomadik_nand_pm_ops = {
- .suspend = nomadik_nand_suspend,
- .resume = nomadik_nand_resume,
-};
-
-static struct platform_driver nomadik_nand_driver = {
- .probe = nomadik_nand_probe,
- .remove = nomadik_nand_remove,
- .driver = {
- .owner = THIS_MODULE,
- .name = "nomadik_nand",
- .pm = &nomadik_nand_pm_ops,
- },
-};
-
-module_platform_driver(nomadik_nand_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("ST Microelectronics (sachin.verma at st.com)");
-MODULE_DESCRIPTION("NAND driver for Nomadik Platform");
diff --git a/include/linux/platform_data/mtd-nomadik-nand.h b/include/linux/platform_data/mtd-nomadik-nand.h
deleted file mode 100644
index c3c8254..0000000
--- a/include/linux/platform_data/mtd-nomadik-nand.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef __ASM_ARCH_NAND_H
-#define __ASM_ARCH_NAND_H
-
-struct nomadik_nand_platform_data {
- struct mtd_partition *parts;
- int nparts;
- int options;
- int (*init) (void);
- int (*exit) (void);
-};
-
-#define NAND_IO_DATA 0x40000000
-#define NAND_IO_CMD 0x40800000
-#define NAND_IO_ADDR 0x41000000
-
-#endif /* __ASM_ARCH_NAND_H */
--
1.7.11.4
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