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Commit f57eb5cc authored by Shengzhou Liu's avatar Shengzhou Liu Committed by David Woodhouse
Browse files

mtd: nand: Add ONFI support for FSL NAND controller 



- fix NAND_CMD_READID command for ONFI detect.
- add NAND_CMD_PARAM command to read the ONFI parameter page.

Signed-off-by: default avatarShengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent d8251108

drivers/mtd/nand/fsl_elbc_nand.c

+10 −8
Original line number Diff line number Diff line
@@ -356,20 +356,22 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, 
		fsl_elbc_run_command(mtd);

		return;



	/* READID must read all 5 possible bytes while CEB is active */

	case NAND_CMD_READID:

		dev_vdbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD_READID.\n");

	case NAND_CMD_PARAM:

		dev_vdbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD %x\n", command);



		out_be32(&lbc->fir, (FIR_OP_CM0 << FIR_OP0_SHIFT) |

		                    (FIR_OP_UA  << FIR_OP1_SHIFT) |

		                    (FIR_OP_RBW << FIR_OP2_SHIFT));

		out_be32(&lbc->fcr, NAND_CMD_READID << FCR_CMD0_SHIFT);

		/* nand_get_flash_type() reads 8 bytes of entire ID string */

		out_be32(&lbc->fbcr, 8);

		elbc_fcm_ctrl->read_bytes = 8;

		out_be32(&lbc->fcr, command << FCR_CMD0_SHIFT);

		/*

		 * although currently it's 8 bytes for READID, we always read

		 * the maximum 256 bytes(for PARAM)

		 */

		out_be32(&lbc->fbcr, 256);

		elbc_fcm_ctrl->read_bytes = 256;

		elbc_fcm_ctrl->use_mdr = 1;

		elbc_fcm_ctrl->mdr = 0;



		elbc_fcm_ctrl->mdr = column;

		set_addr(mtd, 0, 0, 0);

		fsl_elbc_run_command(mtd);

		return;