mtd: add read_byte support to plat_nand
Lantiq SoCs have a External Bus Unit (EBU) that is used to attach MTD media. As we need to co-exist with PCI on the same bus, certain swapping settings must be applied. Similar to the NOR map driver we need to apply a fix to make NAND work. The easiest way is to use byte reads. Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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@ -79,6 +79,7 @@ static int __devinit plat_nand_probe(struct platform_device *pdev)
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data->chip.select_chip = pdata->ctrl.select_chip;
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data->chip.write_buf = pdata->ctrl.write_buf;
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data->chip.read_buf = pdata->ctrl.read_buf;
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data->chip.read_byte = pdata->ctrl.read_byte;
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data->chip.chip_delay = pdata->chip.chip_delay;
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data->chip.options |= pdata->chip.options;
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data->chip.bbt_options |= pdata->chip.bbt_options;
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@ -654,6 +654,7 @@ struct platform_nand_ctrl {
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void (*cmd_ctrl)(struct mtd_info *mtd, int dat, unsigned int ctrl);
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void (*write_buf)(struct mtd_info *mtd, const uint8_t *buf, int len);
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void (*read_buf)(struct mtd_info *mtd, uint8_t *buf, int len);
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unsigned char (*read_byte)(struct mtd_info *mtd);
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void *priv;
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};
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