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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: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Shengzhou Liu 2011-12-12 17:40:53 +08:00 committed by David Woodhouse
parent d8251108e0
commit f57eb5cc53
1 changed files with 10 additions and 8 deletions
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18
drivers/mtd/nand/fsl_elbc_nand.c
View File

@ -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;