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mtd: rawnand: Pass the CS line to be selected in struct nand_operation

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In order to deprecate the ->select_chip hook we need to pass the CS
line a NAND operations are targeting. This is done through the
addition of a cs field to the nand_operation struct.

We also need to keep track of the currently selected target to
properly initialize op->cs, hence the ->cur_cs field addition to the
nand_chip struct.

Note that op->cs is not assigned in nand_exec_op() because we might
rework the way we execute NAND operations in the future (adopt a
queuing mechanism instead of the serialization we have right now).

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Boris Brezillon
2018-11-11 08:55:15 +01:00
committed by Miquel Raynal
parent 1d0178593d
commit ae2294b10b
4 changed files with 37 additions and 20 deletions
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4
drivers/mtd/nand/raw/nand_hynix.c
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@@ -84,7 +84,7 @@ static int hynix_nand_cmd_op(struct nand_chip *chip, u8 cmd)
struct nand_op_instr instrs[] = {
NAND_OP_CMD(cmd, 0),
};
struct nand_operation op = NAND_OPERATION(instrs);
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
return nand_exec_op(chip, &op);
}
@@ -103,7 +103,7 @@ static int hynix_nand_reg_write_op(struct nand_chip *chip, u8 addr, u8 val)
NAND_OP_ADDR(1, &addr, 0),
NAND_OP_8BIT_DATA_OUT(1, &val, 0),
};
struct nand_operation op = NAND_OPERATION(instrs);
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
return nand_exec_op(chip, &op);
}