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ARM: clps711x: autcpu12: Special driver for handling NAND memory is removed 

This patch provide migration to using "gpio-nand" and "basic-mmio-gpio"
drivers instead of using special driver for handling NAND memory.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Alexander Shiyan 2012-11-17 17:57:17 +04:00 committed by Olof Johansson
parent 49e67de364
commit 90383e0ac2
5 changed files with 98 additions and 255 deletions
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98
arch/arm/mach-clps711x/autcpu12.c
View File

@ -23,9 +23,13 @@
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand-gpio.h>
#include <linux/platform_device.h>
#include <linux/basic_mmio_gpio.h>
#include <mach/hardware.h>
#include <asm/sizes.h>
@ -43,6 +47,15 @@
#define AUTCPU12_CS8900_BASE (CS2_PHYS_BASE + 0x300)
#define AUTCPU12_CS8900_IRQ (IRQ_EINT3)
#define AUTCPU12_SMC_BASE (CS1_PHYS_BASE + 0x06000000)
#define AUTCPU12_SMC_SEL_BASE (AUTCPU12_SMC_BASE + 0x10)
#define AUTCPU12_MMGPIO_BASE (CLPS711X_NR_GPIO)
#define AUTCPU12_SMC_NCE (AUTCPU12_MMGPIO_BASE + 0) /* Bit 0 */
#define AUTCPU12_SMC_RDY CLPS711X_GPIO(1, 2)
#define AUTCPU12_SMC_ALE CLPS711X_GPIO(1, 3)
#define AUTCPU12_SMC_CLE CLPS711X_GPIO(1, 3)
static struct resource autcpu12_cs8900_resource[] __initdata = {
DEFINE_RES_MEM(AUTCPU12_CS8900_BASE, SZ_1K),
DEFINE_RES_IRQ(AUTCPU12_CS8900_IRQ),
@ -59,14 +72,98 @@ static struct platform_device autcpu12_nvram_pdev __initdata = {
.num_resources = ARRAY_SIZE(autcpu12_nvram_resource),
};
static struct resource autcpu12_nand_resource[] __initdata = {
DEFINE_RES_MEM(AUTCPU12_SMC_BASE, SZ_16),
};
static struct mtd_partition autcpu12_nand_parts[] __initdata = {
{
.name = "Flash partition 1",
.offset = 0,
.size = SZ_8M,
},
{
.name = "Flash partition 2",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
},
};
static void __init autcpu12_adjust_parts(struct gpio_nand_platdata *pdata,
size_t sz)
{
switch (sz) {
case SZ_16M:
case SZ_32M:
break;
case SZ_64M:
case SZ_128M:
pdata->parts[0].size = SZ_16M;
break;
default:
pr_warn("Unsupported SmartMedia device size %u\n", sz);
break;
}
}
static struct gpio_nand_platdata autcpu12_nand_pdata __initdata = {
.gpio_rdy = AUTCPU12_SMC_RDY,
.gpio_nce = AUTCPU12_SMC_NCE,
.gpio_ale = AUTCPU12_SMC_ALE,
.gpio_cle = AUTCPU12_SMC_CLE,
.gpio_nwp = -1,
.chip_delay = 20,
.parts = autcpu12_nand_parts,
.num_parts = ARRAY_SIZE(autcpu12_nand_parts),
.adjust_parts = autcpu12_adjust_parts,
};
static struct platform_device autcpu12_nand_pdev __initdata = {
.name = "gpio-nand",
.id = -1,
.resource = autcpu12_nand_resource,
.num_resources = ARRAY_SIZE(autcpu12_nand_resource),
.dev = {
.platform_data = &autcpu12_nand_pdata,
},
};
static struct resource autcpu12_mmgpio_resource[] __initdata = {
DEFINE_RES_MEM_NAMED(AUTCPU12_SMC_SEL_BASE, SZ_1, "dat"),
};
static struct bgpio_pdata autcpu12_mmgpio_pdata __initdata = {
.base = AUTCPU12_MMGPIO_BASE,
.ngpio = 8,
};
static struct platform_device autcpu12_mmgpio_pdev __initdata = {
.name = "basic-mmio-gpio",
.id = -1,
.resource = autcpu12_mmgpio_resource,
.num_resources = ARRAY_SIZE(autcpu12_mmgpio_resource),
.dev = {
.platform_data = &autcpu12_mmgpio_pdata,
},
};
static void __init autcpu12_init(void)
{
platform_device_register_simple("video-clps711x", 0, NULL, 0);
platform_device_register_simple("cs89x0", 0, autcpu12_cs8900_resource,
ARRAY_SIZE(autcpu12_cs8900_resource));
platform_device_register(&autcpu12_mmgpio_pdev);
platform_device_register(&autcpu12_nvram_pdev);
}
static void __init autcpu12_init_late(void)
{
if (IS_ENABLED(MTD_NAND_GPIO) && IS_ENABLED(GPIO_GENERIC_PLATFORM)) {
/* We are need both drivers to handle NAND */
platform_device_register(&autcpu12_nand_pdev);
}
}
MACHINE_START(AUTCPU12, "autronix autcpu12")
/* Maintainer: Thomas Gleixner */
.atag_offset = 0x20000,
@ -75,6 +172,7 @@ MACHINE_START(AUTCPU12, "autronix autcpu12")
.init_irq = clps711x_init_irq,
.timer = &clps711x_timer,
.init_machine = autcpu12_init,
.init_late = autcpu12_init_late,
.handle_irq = clps711x_handle_irq,
.restart = clps711x_restart,
MACHINE_END

10
arch/arm/mach-clps711x/include/mach/autcpu12.h
View File

@ -40,8 +40,6 @@
#define AUTCPU12_PHYS_CSAUX1 CS1_PHYS_BASE +0x04000000 /* physical */
#define AUTCPU12_PHYS_SMC CS1_PHYS_BASE +0x06000000 /* physical */
#define AUTCPU12_PHYS_CAN CS1_PHYS_BASE +0x08000000 /* physical */
#define AUTCPU12_PHYS_TOUCH CS1_PHYS_BASE +0x0A000000 /* physical */
@ -50,14 +48,6 @@
#define AUTCPU12_PHYS_LPT CS1_PHYS_BASE +0x0E000000 /* physical */
/*
* defines for smartmedia card access
*/
#define AUTCPU12_SMC_RDY (1<<2)
#define AUTCPU12_SMC_ALE (1<<3)
#define AUTCPU12_SMC_CLE (1<<4)
#define AUTCPU12_SMC_PORT_OFFSET PBDR
#define AUTCPU12_SMC_SELECT_OFFSET 0x10
/*
* defines for lcd contrast
*/

7
drivers/mtd/nand/Kconfig
View File

@ -49,13 +49,6 @@ config MTD_NAND_MUSEUM_IDS
NAND chips (page size 256 byte, erase size 4-8KiB). The IDs
of these chips were reused by later, larger chips.
config MTD_NAND_AUTCPU12
tristate "SmartMediaCard on autronix autcpu12 board"
depends on ARCH_AUTCPU12
help
This enables the driver for the autronix autcpu12 board to
access the SmartMediaCard.
config MTD_NAND_DENALI
depends on PCI
tristate "Support Denali NAND controller on Intel Moorestown"

1
drivers/mtd/nand/Makefile
View File

@ -11,7 +11,6 @@ obj-$(CONFIG_MTD_SM_COMMON) += sm_common.o
obj-$(CONFIG_MTD_NAND_CAFE) += cafe_nand.o
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-$(CONFIG_MTD_NAND_AU1550) += au1550nd.o
obj-$(CONFIG_MTD_NAND_BF5XX) += bf5xx_nand.o

237
drivers/mtd/nand/autcpu12.c
View File

@ -1,237 +0,0 @@
/*
* drivers/mtd/autcpu12.c
*
* Copyright (c) 2002 Thomas Gleixner <tgxl@linutronix.de>
*
* Derived from drivers/mtd/spia.c
* Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
*
* 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
* autronix autcpu12 board, which is a SmartMediaCard. It supports
* 16MiB, 32MiB and 64MiB cards.
*
*
* 02-12-2002 TG Cleanup of module params
*
* 02-20-2002 TG adjusted for different rd/wr address support
* added support for read device ready/busy line
* added page_cache
*
* 10-06-2002 TG 128K card support added
*/
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <asm/io.h>
#include <mach/hardware.h>
#include <asm/sizes.h>
#include <mach/autcpu12.h>
/*
* MTD structure for AUTCPU12 board
*/
static struct mtd_info *autcpu12_mtd = NULL;
static void __iomem *autcpu12_fio_base;
/*
* Define partitions for flash devices
*/
static struct mtd_partition partition_info16k[] = {
{ .name = "AUTCPU12 flash partition 1",
.offset = 0,
.size = 8 * SZ_1M },
{ .name = "AUTCPU12 flash partition 2",
.offset = 8 * SZ_1M,
.size = 8 * SZ_1M },
};
static struct mtd_partition partition_info32k[] = {
{ .name = "AUTCPU12 flash partition 1",
.offset = 0,
.size = 8 * SZ_1M },
{ .name = "AUTCPU12 flash partition 2",
.offset = 8 * SZ_1M,
.size = 24 * SZ_1M },
};
static struct mtd_partition partition_info64k[] = {
{ .name = "AUTCPU12 flash partition 1",
.offset = 0,
.size = 16 * SZ_1M },
{ .name = "AUTCPU12 flash partition 2",
.offset = 16 * SZ_1M,
.size = 48 * SZ_1M },
};
static struct mtd_partition partition_info128k[] = {
{ .name = "AUTCPU12 flash partition 1",
.offset = 0,
.size = 16 * SZ_1M },
{ .name = "AUTCPU12 flash partition 2",
.offset = 16 * SZ_1M,
.size = 112 * SZ_1M },
};
#define NUM_PARTITIONS16K 2
#define NUM_PARTITIONS32K 2
#define NUM_PARTITIONS64K 2
#define NUM_PARTITIONS128K 2
/*
* hardware specific access to control-lines
*
* ALE bit 4 autcpu12_pedr
* CLE bit 5 autcpu12_pedr
* NCE bit 0 fio_ctrl
*
*/
static void autcpu12_hwcontrol(struct mtd_info *mtd, int cmd,
unsigned int ctrl)
{
struct nand_chip *chip = mtd->priv;
if (ctrl & NAND_CTRL_CHANGE) {
void __iomem *addr;
unsigned char bits;
bits = clps_readb(AUTCPU12_SMC_PORT_OFFSET) & ~0x30;
bits |= (ctrl & NAND_CLE) << 4;
bits |= (ctrl & NAND_ALE) << 2;
clps_writeb(bits, AUTCPU12_SMC_PORT_OFFSET);
addr = autcpu12_fio_base + AUTCPU12_SMC_SELECT_OFFSET;
writeb((readb(addr) & ~0x1) | (ctrl & NAND_NCE), addr);
}
if (cmd != NAND_CMD_NONE)
writeb(cmd, chip->IO_ADDR_W);
}
/*
* read device ready pin
*/
int autcpu12_device_ready(struct mtd_info *mtd)
{
return clps_readb(AUTCPU12_SMC_PORT_OFFSET) & AUTCPU12_SMC_RDY;
}
/*
* Main initialization routine
*/
static int __init autcpu12_init(void)
{
struct nand_chip *this;
int err = 0;
/* Allocate memory for MTD device structure and private data */
autcpu12_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip),
GFP_KERNEL);
if (!autcpu12_mtd) {
printk("Unable to allocate AUTCPU12 NAND MTD device structure.\n");
err = -ENOMEM;
goto out;
}
/* map physical address */
autcpu12_fio_base = ioremap(AUTCPU12_PHYS_SMC, SZ_1K);
if (!autcpu12_fio_base) {
printk("Ioremap autcpu12 SmartMedia Card failed\n");
err = -EIO;
goto out_mtd;
}
/* Get pointer to private data */
this = (struct nand_chip *)(&autcpu12_mtd[1]);
/* Initialize structures */
memset(autcpu12_mtd, 0, sizeof(struct mtd_info));
memset(this, 0, sizeof(struct nand_chip));
/* Link the private data with the MTD structure */
autcpu12_mtd->priv = this;
autcpu12_mtd->owner = THIS_MODULE;
/* Set address of NAND IO lines */
this->IO_ADDR_R = autcpu12_fio_base;
this->IO_ADDR_W = autcpu12_fio_base;
this->cmd_ctrl = autcpu12_hwcontrol;
this->dev_ready = autcpu12_device_ready;
/* 20 us command delay time */
this->chip_delay = 20;
this->ecc.mode = NAND_ECC_SOFT;
/* Enable the following for a flash based bad block table */
/*
this->bbt_options = NAND_BBT_USE_FLASH;
*/
this->bbt_options = NAND_BBT_USE_FLASH;
/* Scan to find existence of the device */
if (nand_scan(autcpu12_mtd, 1)) {
err = -ENXIO;
goto out_ior;
}
/* Register the partitions */
switch (autcpu12_mtd->size) {
case SZ_16M:
mtd_device_register(autcpu12_mtd, partition_info16k,
NUM_PARTITIONS16K);
break;
case SZ_32M:
mtd_device_register(autcpu12_mtd, partition_info32k,
NUM_PARTITIONS32K);
break;
case SZ_64M:
mtd_device_register(autcpu12_mtd, partition_info64k,
NUM_PARTITIONS64K);
break;
case SZ_128M:
mtd_device_register(autcpu12_mtd, partition_info128k,
NUM_PARTITIONS128K);
break;
default:
printk("Unsupported SmartMedia device\n");
err = -ENXIO;
goto out_ior;
}
goto out;
out_ior:
iounmap(autcpu12_fio_base);
out_mtd:
kfree(autcpu12_mtd);
out:
return err;
}
module_init(autcpu12_init);
/*
* Clean up routine
*/
static void __exit autcpu12_cleanup(void)
{
/* Release resources, unregister device */
nand_release(autcpu12_mtd);
/* unmap physical address */
iounmap(autcpu12_fio_base);
/* Free the MTD device structure */
kfree(autcpu12_mtd);
}
module_exit(autcpu12_cleanup);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
MODULE_DESCRIPTION("Glue layer for SmartMediaCard on autronix autcpu12");