diff options
Diffstat (limited to 'board/nc650/nand.c')
| -rw-r--r-- | board/nc650/nand.c | 78 | 
1 files changed, 35 insertions, 43 deletions
| diff --git a/board/nc650/nand.c b/board/nc650/nand.c index 8617f7445..faec6053f 100644 --- a/board/nc650/nand.c +++ b/board/nc650/nand.c @@ -22,7 +22,7 @@   */  #include <common.h> - +#include <asm/io.h>  #if defined(CONFIG_CMD_NAND) @@ -32,57 +32,49 @@  /*   *	hardware specific access to control-lines   */ -static void nc650_hwcontrol(struct mtd_info *mtd, int cmd) +static void nc650_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)  {  	struct nand_chip *this = mtd->priv; -	switch(cmd) { -	case NAND_CTL_SETCLE: -		this->IO_ADDR_W += 2; -		break; -	case NAND_CTL_CLRCLE: -		this->IO_ADDR_W -= 2; -		break; -	case NAND_CTL_SETALE: -		this->IO_ADDR_W += 1; -		break; -	case NAND_CTL_CLRALE: -		this->IO_ADDR_W -= 1; -		break; -	case NAND_CTL_SETNCE: -	case NAND_CTL_CLRNCE: -		/* nop */ -		break; +    if (ctrl & NAND_CTRL_CHANGE) { +		if ( ctrl & NAND_CLE ) +			this->IO_ADDR_W += 2; +		else +			this->IO_ADDR_W -= 2; +		if ( ctrl & NAND_ALE ) +			this->IO_ADDR_W += 1; +		else +			this->IO_ADDR_W -= 1;  	} + +    if (cmd != NAND_CMD_NONE) +		writeb(cmd, this->IO_ADDR_W);	  }  #elif defined(CONFIG_IDS852_REV2)  /*   *	hardware specific access to control-lines   */ -static void nc650_hwcontrol(struct mtd_info *mtd, int cmd) +static void nc650_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)  {  	struct nand_chip *this = mtd->priv; -	switch(cmd) { -	case NAND_CTL_SETCLE: -		*(((volatile __u8 *) this->IO_ADDR_W) + 0xa) = 0; -		break; -	case NAND_CTL_CLRCLE: -		*(((volatile __u8 *) this->IO_ADDR_W) + 0x8) = 0; -		break; -	case NAND_CTL_SETALE: -		*(((volatile __u8 *) this->IO_ADDR_W) + 0x9) = 0; -		break; -	case NAND_CTL_CLRALE: -		*(((volatile __u8 *) this->IO_ADDR_W) + 0x8) = 0; -		break; -	case NAND_CTL_SETNCE: -		*(((volatile __u8 *) this->IO_ADDR_W) + 0x8) = 0; -		break; -	case NAND_CTL_CLRNCE: -		*(((volatile __u8 *) this->IO_ADDR_W) + 0xc) = 0; -		break; +    if (ctrl & NAND_CTRL_CHANGE) { +		if ( ctrl & NAND_CLE ) +			writeb(0, (volatile __u8 *) this->IO_ADDR_W + 0xa); +		else +			writeb(0, (volatile __u8 *) this->IO_ADDR_W) + 0x8); +		if ( ctrl & NAND_ALE ) +			writeb(0, (volatile __u8 *) this->IO_ADDR_W) + 0x9); +		else +			writeb(0, (volatile __u8 *) this->IO_ADDR_W) + 0x8); +		if ( ctrl & NAND_NCE ) +			writeb(0, (volatile __u8 *) this->IO_ADDR_W) + 0x8); +		else +			writeb(0, (volatile __u8 *) this->IO_ADDR_W) + 0xc);  	} + +    if (cmd != NAND_CMD_NONE) +		writeb(cmd, this->IO_ADDR_W);  }  #else  #error Unknown IDS852 module revision @@ -93,11 +85,11 @@ static void nc650_hwcontrol(struct mtd_info *mtd, int cmd)   * argument are board-specific (per include/linux/mtd/nand.h):   * - IO_ADDR_R?: address to read the 8 I/O lines of the flash device   * - IO_ADDR_W?: address to write the 8 I/O lines of the flash device - * - hwcontrol: hardwarespecific function for accesing control-lines + * - cmd_ctrl: hardwarespecific function for accesing control-lines   * - dev_ready: hardwarespecific function for  accesing device ready/busy line   * - enable_hwecc?: function to enable (reset)  hardware ecc generator. Must   *   only be provided if a hardware ECC is available - * - eccmode: mode of ecc, see defines + * - eccm.ode: mode of ecc, see defines   * - chip_delay: chip dependent delay for transfering data from array to   *   read regs (tR)   * - options: various chip options. They can partly be set to inform @@ -109,8 +101,8 @@ static void nc650_hwcontrol(struct mtd_info *mtd, int cmd)  int board_nand_init(struct nand_chip *nand)  { -	nand->hwcontrol = nc650_hwcontrol; -	nand->eccmode = NAND_ECC_SOFT; +	nand->cmd_ctrl = nc650_hwcontrol; +	nand->ecc.mode = NAND_ECC_SOFT;  	nand->chip_delay = 12;  /*	nand->options = NAND_SAMSUNG_LP_OPTIONS;*/  	return 0; |