mtd: nand: drop edb7312 support (050f0125) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/mtd/nand/Kconfig

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Original line number	Diff line number	Diff line
		@@ -83,13 +83,6 @@ config MTD_NAND_DENALI_SCRATCH_REG_ADDR
		scratch register here to enable this feature. On Intel Moorestown
		boards, the scratch register is at 0xFF108018.

		config MTD_NAND_EDB7312
		tristate "Support for Cirrus Logic EBD7312 evaluation board"
		depends on ARCH_EDB7312
		help
		This enables the driver for the Cirrus Logic EBD7312 evaluation
		board to access the onboard NAND Flash.

		config MTD_NAND_H1900
		tristate "iPAQ H1900 flash"
		depends on ARCH_PXA

drivers/mtd/nand/Makefile

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Original line number	Diff line number	Diff line
		@@ -13,7 +13,6 @@ obj-$(CONFIG_MTD_NAND_SPIA) += spia.o
		obj-$(CONFIG_MTD_NAND_AMS_DELTA) += ams-delta.o
		obj-$(CONFIG_MTD_NAND_AUTCPU12) += autcpu12.o
		obj-$(CONFIG_MTD_NAND_DENALI) += denali.o
		obj-$(CONFIG_MTD_NAND_EDB7312) += edb7312.o
		obj-$(CONFIG_MTD_NAND_AU1550) += au1550nd.o
		obj-$(CONFIG_MTD_NAND_BF5XX) += bf5xx_nand.o
		obj-$(CONFIG_MTD_NAND_PPCHAMELEONEVB) += ppchameleonevb.o

drivers/mtd/nand/edb7312.c

deleted100644 → 0

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		/*
		* drivers/mtd/nand/edb7312.c
		*
		* Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
		*
		* Derived from drivers/mtd/nand/autcpu12.c
		* Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
		*
		* 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.
		*
		* Overview:
		* This is a device driver for the NAND flash device found on the
		* CLEP7312 board which utilizes the Toshiba TC58V64AFT part. This is
		* a 64Mibit (8MiB x 8 bits) NAND flash device.
		*/

		#include <linux/slab.h>
		#include <linux/module.h>
		#include <linux/init.h>
		#include <linux/mtd/mtd.h>
		#include <linux/mtd/nand.h>
		#include <linux/mtd/partitions.h>
		#include <asm/io.h>
		#include <mach/hardware.h> /* for CLPS7111_VIRT_BASE */
		#include <asm/sizes.h>
		#include <asm/hardware/clps7111.h>

		/*
		* MTD structure for EDB7312 board
		*/
		static struct mtd_info *ep7312_mtd = NULL;

		/*
		* Values specific to the EDB7312 board (used with EP7312 processor)
		*/
		#define EP7312_FIO_PBASE 0x10000000 /* Phys address of flash */
		#define EP7312_PXDR 0x0001 /*
		* IO offset to Port B data register
		* where the CLE, ALE and NCE pins
		* are wired to.
		*/
		#define EP7312_PXDDR 0x0041 /*
		* IO offset to Port B data direction
		* register so we can control the IO
		* lines.
		*/

		/*
		* Module stuff
		*/

		static unsigned long ep7312_fio_pbase = EP7312_FIO_PBASE;
		static void __iomem ep7312_pxdr = (void __iomem )EP7312_PXDR;
		static void __iomem ep7312_pxddr = (void __iomem )EP7312_PXDDR;

		/*
		* Define static partitions for flash device
		*/
		static struct mtd_partition partition_info[] = {
		{.name = "EP7312 Nand Flash",
		.offset = 0,
		.size = 8 * 1024 * 1024}
		};

		#define NUM_PARTITIONS 1

		/*
		* hardware specific access to control-lines
		*
		* NAND_NCE: bit 0 -> bit 6 (bit 7 = 1)
		* NAND_CLE: bit 1 -> bit 4
		* NAND_ALE: bit 2 -> bit 5
		*/
		static void ep7312_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
		{
		struct nand_chip *chip = mtd->priv;

		if (ctrl & NAND_CTRL_CHANGE) {
		unsigned char bits = 0x80;

		bits \|= (ctrl & (NAND_CLE \| NAND_ALE)) << 3;
		bits \|= (ctrl & NAND_NCE) ? 0x00 : 0x40;

		clps_writeb((clps_readb(ep7312_pxdr) & 0xF0) \| bits,
		ep7312_pxdr);
		}
		if (cmd != NAND_CMD_NONE)
		writeb(cmd, chip->IO_ADDR_W);
		}

		/*
		* read device ready pin
		*/
		static int ep7312_device_ready(struct mtd_info *mtd)
		{
		return 1;
		}

		/*
		* Main initialization routine
		*/
		static int __init ep7312_init(void)
		{
		struct nand_chip *this;
		void __iomem *ep7312_fio_base;

		/* Allocate memory for MTD device structure and private data */
		ep7312_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
		if (!ep7312_mtd) {
		printk("Unable to allocate EDB7312 NAND MTD device structure.\n");
		return -ENOMEM;
		}

		/* map physical address */
		ep7312_fio_base = ioremap(ep7312_fio_pbase, SZ_1K);
		if (!ep7312_fio_base) {
		printk("ioremap EDB7312 NAND flash failed\n");
		kfree(ep7312_mtd);
		return -EIO;
		}

		/* Get pointer to private data */
		this = (struct nand_chip *)(&ep7312_mtd[1]);

		/* Initialize structures */
		memset(ep7312_mtd, 0, sizeof(struct mtd_info));
		memset(this, 0, sizeof(struct nand_chip));

		/* Link the private data with the MTD structure */
		ep7312_mtd->priv = this;
		ep7312_mtd->owner = THIS_MODULE;

		/*
		* Set GPIO Port B control register so that the pins are configured
		* to be outputs for controlling the NAND flash.
		*/
		clps_writeb(0xf0, ep7312_pxddr);

		/* insert callbacks */
		this->IO_ADDR_R = ep7312_fio_base;
		this->IO_ADDR_W = ep7312_fio_base;
		this->cmd_ctrl = ep7312_hwcontrol;
		this->dev_ready = ep7312_device_ready;
		/* 15 us command delay time */
		this->chip_delay = 15;

		/* Scan to find existence of the device */
		if (nand_scan(ep7312_mtd, 1)) {
		iounmap((void *)ep7312_fio_base);
		kfree(ep7312_mtd);
		return -ENXIO;
		}
		ep7312_mtd->name = "edb7312-nand";

		/* Register the partitions */
		mtd_device_register(ep7312_mtd, NULL, 0,
		partition_info, NUM_PARTITIONS);

		/* Return happy */
		return 0;
		}

		module_init(ep7312_init);

		/*
		* Clean up routine
		*/
		static void __exit ep7312_cleanup(void)
		{
		struct nand_chip this = (struct nand_chip )&ep7312_mtd[1];

		/* Release resources, unregister device */
		nand_release(ap7312_mtd);

		/* Release io resource */
		iounmap(this->IO_ADDR_R);

		/* Free the MTD device structure */
		kfree(ep7312_mtd);
		}

		module_exit(ep7312_cleanup);

		MODULE_LICENSE("GPL");
		MODULE_AUTHOR("Marius Groeger <mag@sysgo.de>");
		MODULE_DESCRIPTION("MTD map driver for Cogent EDB7312 board");