diff options
Diffstat (limited to 'board/bf537-stamp/nand.c')
-rw-r--r-- | board/bf537-stamp/nand.c | 43 |
1 files changed, 19 insertions, 24 deletions
diff --git a/board/bf537-stamp/nand.c b/board/bf537-stamp/nand.c index 6ff0f4f..9800083 100644 --- a/board/bf537-stamp/nand.c +++ b/board/bf537-stamp/nand.c @@ -37,34 +37,29 @@ /* * hardware specific access to control-lines */ -static void bfin_hwcontrol(struct mtd_info *mtd, int cmd) +static void bfin_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) { register struct nand_chip *this = mtd->priv; + u32 IO_ADDR_W = (u32) this->IO_ADDR_W; - switch (cmd) { - - case NAND_CTL_SETCLE: - this->IO_ADDR_W = CFG_NAND_BASE + BFIN_NAND_CLE; - break; - case NAND_CTL_CLRCLE: - this->IO_ADDR_W = CFG_NAND_BASE; - break; - - case NAND_CTL_SETALE: - this->IO_ADDR_W = CFG_NAND_BASE + BFIN_NAND_ALE; - break; - case NAND_CTL_CLRALE: - this->IO_ADDR_W = CFG_NAND_BASE; - break; - case NAND_CTL_SETNCE: - case NAND_CTL_CLRNCE: - break; + if (ctrl & NAND_CTRL_CHANGE) { + if( ctrl & NAND_CLE ) + IO_ADDR_W = CFG_NAND_BASE + BFIN_NAND_CLE; + else + IO_ADDR_W = CFG_NAND_BASE; + if( ctrl & NAND_ALE ) + IO_ADDR_W = CFG_NAND_BASE + BFIN_NAND_ALE; + else + IO_ADDR_W = CFG_NAND_BASE; + this->IO_ADDR_W = (void __iomem *) IO_ADDR_W; } - this->IO_ADDR_R = this->IO_ADDR_W; /* Drain the writebuffer */ SSYNC(); + + if (cmd != NAND_CMD_NONE) + writeb(cmd, this->IO_ADDR_W); } int bfin_device_ready(struct mtd_info *mtd) @@ -79,11 +74,11 @@ int bfin_device_ready(struct mtd_info *mtd) * 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 + * - ecc.mode: 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 @@ -98,8 +93,8 @@ void board_nand_init(struct nand_chip *nand) *PORT(CONFIG_NAND_GPIO_PORT, IO_DIR) &= ~BFIN_NAND_READY; *PORT(CONFIG_NAND_GPIO_PORT, IO_INEN) |= BFIN_NAND_READY; - nand->hwcontrol = bfin_hwcontrol; - nand->eccmode = NAND_ECC_SOFT; + nand->cmd_ctrl = bfin_hwcontrol; + nand->ecc.mode = NAND_ECC_SOFT; nand->dev_ready = bfin_device_ready; nand->chip_delay = 30; } |