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Commit b21b72cf authored by Kyungmin Park's avatar Kyungmin Park
Browse files

[MTD] [OneNAND] Consolidate OneNAND operation order 



Consolidate OneNAND operation order as OneNAND Spec.
It also doesn't break previous operation order.

Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
parent 9d2f0b7a

drivers/mtd/onenand/onenand_base.c

+4 −15
Original line number Diff line number Diff line
@@ -182,8 +182,7 @@ static int onenand_buffer_address(int dataram1, int sectors, int count) 
static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t len)

{

	struct onenand_chip *this = mtd->priv;

	int value, readcmd = 0, block_cmd = 0;

	int block, page;

	int value, block, page;



	/* Address translation */

	switch (cmd) {
@@ -198,7 +197,6 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le 
	case ONENAND_CMD_ERASE:

	case ONENAND_CMD_BUFFERRAM:

	case ONENAND_CMD_OTP_ACCESS:

		block_cmd = 1;

		block = (int) (addr >> this->erase_shift);

		page = -1;

		break;
@@ -240,12 +238,10 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le 
		value = onenand_block_address(this, block);

		this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1);



		if (block_cmd) {

		/* Select DataRAM for DDP */

		value = onenand_bufferram_address(this, block);

		this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);

	}

	}



	if (page != -1) {

		/* Now we use page size operation */
@@ -256,7 +252,6 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le 
		case ONENAND_CMD_READ:

		case ONENAND_CMD_READOOB:

			dataram = ONENAND_SET_NEXT_BUFFERRAM(this);

			readcmd = 1;

			break;



		default:
@@ -273,12 +268,6 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le 
		/* Write 'BSA, BSC' of DataRAM */

		value = onenand_buffer_address(dataram, sectors, count);

		this->write_word(value, this->base + ONENAND_REG_START_BUFFER);



		if (readcmd) {

			/* Select DataRAM for DDP */

			value = onenand_bufferram_address(this, block);

			this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);

		}

	}



	/* Interrupt clear */