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[MTD] [NAND] TXx9: add NDFMC support 

Add platform support for NAND Flash Memory Controller of TXx9 SoCs.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-By: Ralf Bächle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Atsushi Nemoto 2009-03-04 12:01:31 -08:00 committed by David Woodhouse
parent fc371a25ea
commit a591f5d35e
8 changed files with 98 additions and 0 deletions
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30
arch/mips/include/asm/txx9/ndfmc.h Normal file
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@ -0,0 +1,30 @@
/*
* 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.
*
* (C) Copyright TOSHIBA CORPORATION 2007
*/
#ifndef __ASM_TXX9_NDFMC_H
#define __ASM_TXX9_NDFMC_H
#define NDFMC_PLAT_FLAG_USE_BSPRT 0x01
#define NDFMC_PLAT_FLAG_NO_RSTR 0x02
#define NDFMC_PLAT_FLAG_HOLDADD 0x04
#define NDFMC_PLAT_FLAG_DUMMYWRITE 0x08
struct txx9ndfmc_platform_data {
unsigned int shift;
unsigned int gbus_clock;
unsigned int hold; /* hold time in nanosecond */
unsigned int spw; /* strobe pulse width in nanosecond */
unsigned int flags;
unsigned char ch_mask; /* available channel bitmask */
unsigned char wp_mask; /* write-protect bitmask */
unsigned char wide_mask; /* 16bit-nand bitmask */
};
void txx9_ndfmc_init(unsigned long baseaddr,
const struct txx9ndfmc_platform_data *plat_data);
#endif /* __ASM_TXX9_NDFMC_H */

1
arch/mips/include/asm/txx9/tx4938.h
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@ -291,6 +291,7 @@ int tx4938_pcic1_map_irq(const struct pci_dev *dev, u8 slot);
void tx4938_setup_pcierr_irq(void);
void tx4938_irq_init(void);
void tx4938_mtd_init(int ch);
void tx4938_ndfmc_init(unsigned int hold, unsigned int spw);
struct tx4938ide_platform_info {
/*

2
arch/mips/include/asm/txx9/tx4939.h
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@ -542,5 +542,7 @@ int tx4939_irq(void);
void tx4939_mtd_init(int ch);
void tx4939_ata_init(void);
void tx4939_rtc_init(void);
void tx4939_ndfmc_init(unsigned int hold, unsigned int spw,
unsigned char ch_mask, unsigned char wide_mask);
#endif /* __ASM_TXX9_TX4939_H */

21
arch/mips/txx9/generic/setup.c
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@ -32,6 +32,7 @@
#include <asm/txx9/generic.h>
#include <asm/txx9/pci.h>
#include <asm/txx9tmr.h>
#include <asm/txx9/ndfmc.h>
#ifdef CONFIG_CPU_TX49XX
#include <asm/txx9/tx4938.h>
#endif
@ -691,6 +692,26 @@ void __init txx9_physmap_flash_init(int no, unsigned long addr,
#endif
}
void __init txx9_ndfmc_init(unsigned long baseaddr,
const struct txx9ndfmc_platform_data *pdata)
{
#if defined(CONFIG_MTD_NAND_TXX9NDFMC) || \
defined(CONFIG_MTD_NAND_TXX9NDFMC_MODULE)
struct resource res = {
.start = baseaddr,
.end = baseaddr + 0x1000 - 1,
.flags = IORESOURCE_MEM,
};
struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
if (!pdev ||
platform_device_add_resources(pdev, &res, 1) ||
platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
platform_device_add(pdev))
platform_device_put(pdev);
#endif
}
#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
static DEFINE_SPINLOCK(txx9_iocled_lock);

21
arch/mips/txx9/generic/setup_tx4938.c
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@ -23,6 +23,7 @@
#include <asm/txx9tmr.h>
#include <asm/txx9pio.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/ndfmc.h>
#include <asm/txx9/tx4938.h>
static void __init tx4938_wdr_init(void)
@ -382,6 +383,26 @@ void __init tx4938_ata_init(unsigned int irq, unsigned int shift, int tune)
platform_device_put(pdev);
}
void __init tx4938_ndfmc_init(unsigned int hold, unsigned int spw)
{
struct txx9ndfmc_platform_data plat_data = {
.shift = 1,
.gbus_clock = txx9_gbus_clock,
.hold = hold,
.spw = spw,
.ch_mask = 1,
};
unsigned long baseaddr = TX4938_NDFMC_REG & 0xfffffffffULL;
#ifdef __BIG_ENDIAN
baseaddr += 4;
#endif
if ((__raw_readq(&tx4938_ccfgptr->pcfg) &
(TX4938_PCFG_ATA_SEL|TX4938_PCFG_ISA_SEL|TX4938_PCFG_NDF_SEL)) ==
TX4938_PCFG_NDF_SEL)
txx9_ndfmc_init(baseaddr, &plat_data);
}
static void __init tx4938_stop_unused_modules(void)
{
__u64 pcfg, rst = 0, ckd = 0;

17
arch/mips/txx9/generic/setup_tx4939.c
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@ -27,6 +27,7 @@
#include <asm/txx9irq.h>
#include <asm/txx9tmr.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/ndfmc.h>
#include <asm/txx9/tx4939.h>
static void __init tx4939_wdr_init(void)
@ -457,6 +458,22 @@ void __init tx4939_rtc_init(void)
platform_device_register(&rtc_dev);
}
void __init tx4939_ndfmc_init(unsigned int hold, unsigned int spw,
unsigned char ch_mask, unsigned char wide_mask)
{
struct txx9ndfmc_platform_data plat_data = {
.shift = 1,
.gbus_clock = txx9_gbus_clock,
.hold = hold,
.spw = spw,
.flags = NDFMC_PLAT_FLAG_NO_RSTR | NDFMC_PLAT_FLAG_HOLDADD |
NDFMC_PLAT_FLAG_DUMMYWRITE,
.ch_mask = ch_mask,
.wide_mask = wide_mask,
};
txx9_ndfmc_init(TX4939_NDFMC_REG & 0xfffffffffULL, &plat_data);
}
static void __init tx4939_stop_unused_modules(void)
{
__u64 pcfg, rst = 0, ckd = 0;

2
arch/mips/txx9/rbtx4938/setup.c
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@ -352,6 +352,8 @@ static void __init rbtx4938_device_init(void)
rbtx4938_ne_init();
tx4938_wdt_init();
rbtx4938_mtd_init();
/* TC58DVM82A1FT: tDH=10ns, tWP=tRP=tREADID=35ns */
tx4938_ndfmc_init(10, 35);
tx4938_ata_init(RBTX4938_IRQ_IOC_ATA, 0, 1);
txx9_iocled_init(RBTX4938_LED_ADDR - IO_BASE, -1, 8, 1, "green", NULL);
}

4
arch/mips/txx9/rbtx4939/setup.c
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@ -333,6 +333,10 @@ static void __init rbtx4939_device_init(void)
platform_device_add_data(pdev, &smc_pdata, sizeof(smc_pdata)) ||
platform_device_add(pdev))
platform_device_put(pdev);
/* TC58DVM82A1FT: tDH=10ns, tWP=tRP=tREADID=35ns */
tx4939_ndfmc_init(10, 35,
(1 << 1) | (1 << 2),
(1 << 2)); /* ch1:8bit, ch2:16bit */
rbtx4939_led_setup();
tx4939_wdt_init();
tx4939_ata_init();