[PATCH v4 0/3] mtd: nand: mxc_nand: Convert to exec_op

[Sascha Hauer]

This series converts the mxc_nand driver over to exec_op which gets
us rid of a bunch of legacy code. The motivation for this series is
a board that has a NAND chip connected that needs 4bit ECC whereas the
i.MX27 hardware only supports 1Bit Hamming ECC. With this series the
driver now supports software BCH ECC.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
Changes in v4:
- fix writing partial pages
- Link to v3: https://lore.kernel.org/r/20240514-mtd-nand-mxc-nand-exec-op-v3-0-3e6f45fd3d82@pengutronix.de

Changes in v3:
- use monolithic page read/write helpers
- drop exec_op tracing debug functions
- use nand_op_parser_exec_op()
- move copy_spare() out of exec_op()
- fix comment about NFC handling R/B internally
- drop host->column. With using nand_op_parser_exec_op() we can forbid the core
  to issue multiple reads after a command
- Link to v2: https://lore.kernel.org/r/20240508-mtd-nand-mxc-nand-exec-op-v2-0-6b7366b7831f@pengutronix.de

Changes in v2:
- Enable hw ecc only when needed and leave it disabled otherwise
- Use untangled data/oob layout for software BCH ECC
- Link to v1: https://lore.kernel.org/r/20240417-mtd-nand-mxc-nand-exec-op-v1-0-d12564fe54e9@pengutronix.de

---
Sascha Hauer (3):
      mtd: nand: mxc_nand: separate page read from ecc calc
      mtd: nand: mxc_nand: implement exec_op
      mtd: nand: mxc_nand: support software ECC

 drivers/mtd/nand/raw/mxc_nand.c | 696 ++++++++++++++++++++--------------------
 1 file changed, 343 insertions(+), 353 deletions(-)
---
base-commit: a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6
change-id: 20240417-mtd-nand-mxc-nand-exec-op-38b3b80c4377

Best regards,
-- 
Sascha Hauer <s.hauer at pengutronix.de>