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Commit b4f7aa84 authored by John Crispin's avatar John Crispin Committed by David Woodhouse
Browse files

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: default avatarJohn Crispin <blogic@openwrt.org>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent a4f20351

drivers/mtd/nand/plat_nand.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -79,6 +79,7 @@ static int __devinit plat_nand_probe(struct platform_device *pdev) 
	data->chip.select_chip = pdata->ctrl.select_chip;

	data->chip.select_chip = pdata->ctrl.select_chip;

	data->chip.write_buf = pdata->ctrl.write_buf;

	data->chip.write_buf = pdata->ctrl.write_buf;

	data->chip.read_buf = pdata->ctrl.read_buf;

	data->chip.read_buf = pdata->ctrl.read_buf;

	data->chip.read_byte = pdata->ctrl.read_byte;

	data->chip.chip_delay = pdata->chip.chip_delay;

	data->chip.chip_delay = pdata->chip.chip_delay;

	data->chip.options |= pdata->chip.options;

	data->chip.options |= pdata->chip.options;

	data->chip.bbt_options |= pdata->chip.bbt_options;

	data->chip.bbt_options |= pdata->chip.bbt_options;

include/linux/mtd/nand.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -654,6 +654,7 @@ struct platform_nand_ctrl { 
	void (*cmd_ctrl)(struct mtd_info *mtd, int dat, unsigned int ctrl);

	void (*cmd_ctrl)(struct mtd_info *mtd, int dat, unsigned int ctrl);

	void (*write_buf)(struct mtd_info *mtd, const uint8_t *buf, int len);

	void (*write_buf)(struct mtd_info *mtd, const uint8_t *buf, int len);

	void (*read_buf)(struct mtd_info *mtd, uint8_t *buf, int len);

	void (*read_buf)(struct mtd_info *mtd, uint8_t *buf, int len);

	unsigned char (*read_byte)(struct mtd_info *mtd);

	void *priv;

	void *priv;

};

};