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ColdFire: Fix M5329EVB and M5373EVB nand issue

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Fix compilation issue caused by a few mismatches.
Provide proper nand chip select enable/disable in
nand_hwcontrol() rather than in board_nand_init()
just enable once. Remove redundant local nand driver
functions - nand_read_byte(), nand_write_byte() and
nand_dev_ready() to use common nand driver.

Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
This commit is contained in:
TsiChung Liew 2008-10-24 12:59:12 +00:00 committed by John Rigby
parent 1b27084422
commit e4f69d1bd2
2 changed files with 31 additions and 43 deletions
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57
board/freescale/m5329evb/nand.c
View file

@ -36,56 +36,42 @@ DECLARE_GLOBAL_DATA_PTR;
#include <linux/mtd/mtd.h>
#define SET_CLE 0x10
#define CLR_CLE ~SET_CLE
#define SET_ALE 0x08
#define CLR_ALE ~SET_ALE
static void nand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
static void nand_hwcontrol(struct mtd_info *mtdinfo, int cmd, unsigned int ctrl)
{
struct nand_chip *this = mtdinfo->priv;
/* volatile fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS; TODO: handle wp */
u32 nand_baseaddr = (u32) this->IO_ADDR_W;
volatile u16 *nCE = (u16 *) CONFIG_SYS_LATCH_ADDR;
if (ctrl & NAND_CTRL_CHANGE) {
if ( ctrl & NAND_CLE )
nand_baseaddr |= SET_CLE;
else
nand_baseaddr &= CLR_CLE;
if ( ctrl & NAND_ALE )
nand_baseaddr |= SET_ALE;
else
nand_baseaddr &= CLR_ALE;
ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
IO_ADDR_W &= ~(SET_ALE | SET_CLE);
*nCE &= 0xFFFB;
if (ctrl & NAND_NCE)
*nCE |= 0x0004;
if (ctrl & NAND_CLE)
IO_ADDR_W |= SET_CLE;
if (ctrl & NAND_ALE)
IO_ADDR_W |= SET_ALE;
this->IO_ADDR_W = (void *)IO_ADDR_W;
}
this->IO_ADDR_W = (void __iomem *)(nand_baseaddr);
if (cmd != NAND_CMD_NONE)
writeb(cmd, this->IO_ADDR_W);
}
static void nand_write_byte(struct mtd_info *mtdinfo, u_char byte)
{
struct nand_chip *this = mtdinfo->priv;
*((volatile u8 *)(this->IO_ADDR_W)) = byte;
}
static u8 nand_read_byte(struct mtd_info *mtdinfo)
{
struct nand_chip *this = mtdinfo->priv;
return (u8) (*((volatile u8 *)this->IO_ADDR_R));
}
static int nand_dev_ready(struct mtd_info *mtdinfo)
{
return 1;
}
int board_nand_init(struct nand_chip *nand)
{
volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
*((volatile u16 *)CONFIG_SYS_LATCH_ADDR) |= 0x0004;
/* set up pin configuration */
/*
* set up pin configuration - enabled 2nd output buffer's signals
* (nand_ngpio - nCE USB1/2_PWR_EN, LATCH_GPIOs, LCD_VEEEN, etc)
* to use nCE signal
*/
gpio->par_timer &= ~GPIO_PAR_TIN3_TIN3;
gpio->pddr_timer |= 0x08;
gpio->ppd_timer |= 0x08;
@ -95,9 +81,6 @@ int board_nand_init(struct nand_chip *nand)
nand->chip_delay = 50;
nand->ecc.mode = NAND_ECC_SOFT;
nand->cmd_ctrl = nand_hwcontrol;
nand->read_byte = nand_read_byte;
nand->write_byte = nand_write_byte;
nand->dev_ready = nand_dev_ready;
return 0;
}

17
board/freescale/m5373evb/nand.c
View file

@ -41,19 +41,21 @@ DECLARE_GLOBAL_DATA_PTR;
static void nand_hwcontrol(struct mtd_info *mtdinfo, int cmd, unsigned int ctrl)
{
struct nand_chip *this = mtdinfo->priv;
volatile fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS;
u32 nand_baseaddr = (u32) this->IO_ADDR_W;
volatile u16 *nCE = (u16 *) CONFIG_SYS_LATCH_ADDR;
if (ctrl & NAND_CTRL_CHANGE) {
ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
IO_ADDR_W &= ~(SET_ALE | SE_CLE);
IO_ADDR_W &= ~(SET_ALE | SET_CLE);
*nCE &= 0xFFFB;
if (ctrl & NAND_NCE)
*nCE |= 0x0004;
if (ctrl & NAND_CLE)
IO_ADDR_W |= SET_CLE;
if (ctrl & NAND_ALE)
IO_ADDR_W |= SET_ALE;
at91_set_gpio_value(AT91_PIN_PD15, !(ctrl & NAND_NCE));
this->IO_ADDR_W = (void *)IO_ADDR_W;
}
@ -67,10 +69,13 @@ int board_nand_init(struct nand_chip *nand)
volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
volatile fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS;
*((volatile u16 *)CONFIG_SYS_LATCH_ADDR) |= 0x0004;
fbcs->csmr2 &= ~FBCS_CSMR_WP;
/* set up pin configuration */
/*
* set up pin configuration - enabled 2nd output buffer's signals
* (nand_ngpio - nCE USB1/2_PWR_EN, LATCH_GPIOs, LCD_VEEEN, etc)
* to use nCE signal
*/
gpio->par_timer &= ~GPIO_PAR_TIN3_TIN3;
gpio->pddr_timer |= 0x08;
gpio->ppd_timer |= 0x08;