.pattern = scan_ff_pattern
};
-/* We will use all the (page + OOB). */
+/*
+ * We may change the layout if we can get the ECC info from the datasheet,
+ * else we will use all the (page + OOB).
+ */
static struct nand_ecclayout gpmi_hw_ecclayout = {
.eccbytes = 0,
.eccpos = { 0, },
int common_nfc_set_geometry(struct gpmi_nand_data *this)
{
- return set_geometry_by_ecc_info(this) ? 0 : legacy_set_geometry(this);
+ return legacy_set_geometry(this);
}
struct dma_chan *get_dma_chan(struct gpmi_nand_data *this)
{
- int chipnr = this->current_chip;
-
- return this->dma_chans[chipnr];
+ /* We use the DMA channel 0 to access all the nand chips. */
+ return this->dma_chans[0];
}
/* Can we use the upper's buffer directly for DMA? */
static int
gpmi_ecc_write_oob(struct mtd_info *mtd, struct nand_chip *chip, int page)
{
- /*
- * The BCH will use all the (page + oob).
- * Our gpmi_hw_ecclayout can only prohibit the JFFS2 to write the oob.
- * But it can not stop some ioctls such MEMWRITEOOB which uses
- * MTD_OPS_PLACE_OOB. So We have to implement this function to prohibit
- * these ioctls too.
- */
- return -EPERM;
+ struct nand_oobfree *of = mtd->ecclayout->oobfree;
+ int status = 0;
+
+ /* Do we have available oob area? */
+ if (!of->length)
+ return -EPERM;
+
+ if (!nand_is_slc(chip))
+ return -EPERM;
+
+ chip->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize + of->offset, page);
+ chip->write_buf(mtd, chip->oob_poi + of->offset, of->length);
+ chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
+
+ status = chip->waitfunc(mtd, chip);
+ return status & NAND_STATUS_FAIL ? -EIO : 0;
}
static int gpmi_block_markbad(struct mtd_info *mtd, loff_t ofs)
if (ret)
goto err_out;
- ret = nand_scan_ident(mtd, 1, NULL);
+ ret = nand_scan_ident(mtd, 2, NULL);
if (ret)
goto err_out;
{ .name = "imx23-gpmi-nand", .driver_data = IS_MX23, },
{ .name = "imx28-gpmi-nand", .driver_data = IS_MX28, },
{ .name = "imx6q-gpmi-nand", .driver_data = IS_MX6Q, },
- {},
+ {}
};
static const struct of_device_id gpmi_nand_id_table[] = {
{
.compatible = "fsl,imx23-gpmi-nand",
- .data = (void *)&gpmi_ids[IS_MX23]
+ .data = (void *)&gpmi_ids[IS_MX23],
}, {
.compatible = "fsl,imx28-gpmi-nand",
- .data = (void *)&gpmi_ids[IS_MX28]
+ .data = (void *)&gpmi_ids[IS_MX28],
}, {
.compatible = "fsl,imx6q-gpmi-nand",
- .data = (void *)&gpmi_ids[IS_MX6Q]
+ .data = (void *)&gpmi_ids[IS_MX6Q],
}, {}
};
MODULE_DEVICE_TABLE(of, gpmi_nand_id_table);