diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/bf5xx_nand.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c index 8506e7e606f..2974995e194 100644 --- a/drivers/mtd/nand/bf5xx_nand.c +++ b/drivers/mtd/nand/bf5xx_nand.c @@ -68,6 +68,27 @@ #define DRV_AUTHOR "Bryan Wu <bryan.wu@analog.com>" #define DRV_DESC "BF5xx on-chip NAND FLash Controller Driver" +/* NFC_STAT Masks */ +#define NBUSY 0x01 /* Not Busy */ +#define WB_FULL 0x02 /* Write Buffer Full */ +#define PG_WR_STAT 0x04 /* Page Write Pending */ +#define PG_RD_STAT 0x08 /* Page Read Pending */ +#define WB_EMPTY 0x10 /* Write Buffer Empty */ + +/* NFC_IRQSTAT Masks */ +#define NBUSYIRQ 0x01 /* Not Busy IRQ */ +#define WB_OVF 0x02 /* Write Buffer Overflow */ +#define WB_EDGE 0x04 /* Write Buffer Edge Detect */ +#define RD_RDY 0x08 /* Read Data Ready */ +#define WR_DONE 0x10 /* Page Write Done */ + +/* NFC_RST Masks */ +#define ECC_RST 0x01 /* ECC (and NFC counters) Reset */ + +/* NFC_PGCTL Masks */ +#define PG_RD_START 0x01 /* Page Read Start */ +#define PG_WR_START 0x02 /* Page Write Start */ + #ifdef CONFIG_MTD_NAND_BF5XX_HWECC static int hardware_ecc = 1; #else @@ -487,7 +508,7 @@ static void bf5xx_nand_dma_rw(struct mtd_info *mtd, * transferred to generate the correct ECC register * values. */ - bfin_write_NFC_RST(0x1); + bfin_write_NFC_RST(ECC_RST); SSYNC(); disable_dma(CH_NFC); @@ -497,7 +518,7 @@ static void bf5xx_nand_dma_rw(struct mtd_info *mtd, set_dma_config(CH_NFC, 0x0); set_dma_start_addr(CH_NFC, (unsigned long) buf); -/* The DMAs have different size on BF52x and BF54x */ + /* The DMAs have different size on BF52x and BF54x */ #ifdef CONFIG_BF52x set_dma_x_count(CH_NFC, (page_size >> 1)); set_dma_x_modify(CH_NFC, 2); @@ -517,9 +538,9 @@ static void bf5xx_nand_dma_rw(struct mtd_info *mtd, /* Start PAGE read/write operation */ if (is_read) - bfin_write_NFC_PGCTL(0x1); + bfin_write_NFC_PGCTL(PG_RD_START); else - bfin_write_NFC_PGCTL(0x2); + bfin_write_NFC_PGCTL(PG_WR_START); wait_for_completion(&info->dma_completion); } |