diff options
Diffstat (limited to 'board/atmel/at91cap9adk/nand.c')
| -rw-r--r-- | board/atmel/at91cap9adk/nand.c | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/board/atmel/at91cap9adk/nand.c b/board/atmel/at91cap9adk/nand.c index 0432ef1..1dec558 100644 --- a/board/atmel/at91cap9adk/nand.c +++ b/board/atmel/at91cap9adk/nand.c @@ -37,36 +37,35 @@ #define MASK_ALE (1 << 21) /* our ALE is AD21 */ #define MASK_CLE (1 << 22) /* our CLE is AD22 */ -static void at91cap9adk_nand_hwcontrol(struct mtd_info *mtd, int cmd) +static void at91cap9adk_nand_hwcontrol(struct mtd_info *mtd, + int cmd, unsigned int ctrl) { struct nand_chip *this = mtd->priv; - ulong IO_ADDR_W = (ulong) this->IO_ADDR_W; - IO_ADDR_W &= ~(MASK_ALE|MASK_CLE); - switch (cmd) { - case NAND_CTL_SETCLE: - IO_ADDR_W |= MASK_CLE; - break; - case NAND_CTL_SETALE: - IO_ADDR_W |= MASK_ALE; - break; - case NAND_CTL_CLRNCE: - at91_set_gpio_value(AT91_PIN_PD15, 1); - break; - case NAND_CTL_SETNCE: - at91_set_gpio_value(AT91_PIN_PD15, 0); - break; + if (ctrl & NAND_CTRL_CHANGE) { + ulong IO_ADDR_W = (ulong) this->IO_ADDR_W; + IO_ADDR_W &= ~(MASK_ALE | MASK_CLE); + + if (ctrl & NAND_CLE) + IO_ADDR_W |= MASK_CLE; + if (ctrl & NAND_ALE) + IO_ADDR_W |= MASK_ALE; + + at91_set_gpio_value(AT91_PIN_PD15, !(ctrl & NAND_NCE)); + this->IO_ADDR_W = (void *) IO_ADDR_W; } - this->IO_ADDR_W = (void *) IO_ADDR_W; + + if (cmd != NAND_CMD_NONE) + writeb(cmd, this->IO_ADDR_W); } int board_nand_init(struct nand_chip *nand) { - nand->eccmode = NAND_ECC_SOFT; + nand->ecc.mode = NAND_ECC_SOFT; #ifdef CFG_NAND_DBW_16 nand->options = NAND_BUSWIDTH_16; #endif - nand->hwcontrol = at91cap9adk_nand_hwcontrol; + nand->cmd_ctrl = at91cap9adk_nand_hwcontrol; nand->chip_delay = 20; return 0; |