[v12,0/8] Add QPIC SPI NAND driver

v12:
 * Added EXPORT_SYMBOL() macro for all the api in qpic_common.c
 * Added MODULE_LICENSE() macro in qpic_common.c to build
   qpic_common.c as module as well
 * Removed bool type for CONFIG_MTD_NAND_QCOM to fix build error
   reported by kernel test bot
 * Added obj-$(CONFIG_MTD_NAND_QCOM) += qpic_common.o condition
   in Makefile to build qpic_common.c as built-in or as module
   based on CONFIG_MTD_NAND_QCOM
 * Added Reviewed-by tag
 * Added obj-$(CONFIG_SPI_QPIC_SNAND) += qpic_common.o in Makefile
   to build qpic_common.c based on CONFIG_SPI_QPIC_SNAND
 * Updated commit header and commit message
 * Removed sdhci node from rdp433.dts file 

v11:
 * Dropped Reviewed-by tag
 * Added soc based compatible "qcom,ipq9574-snand"
 * fixed build error reported by kernel test bot by
   changing statement "depends on MTD" to "selct MTD"
   in drivers/spi/Kconfig file

v10:
 * Fixed compilation warnings reported by kernel test robot
 * Added depends on CONFIG_MTD for qpic-spi nand driver
 * Removed extra bracket from statement if (i == (num_cw - 1))
   in qcom_spi_program_raw() api.

v9:
 * Fixed all the compilation warning reported by
   kernel test robot
  * Changed type of cmd1, vld to u32 from __le32 in qcom_nand_controller
   structure
 * Changed type of cfg0, cfg1, cfg0_raw, cfg1_raw, clrflashstatus,
   ecc_buf_cfg, ecc_bch_cfg, clrreadstatus to u32 in qcom_nand_host
   structure
 * In nandc_set_read_loc_first() api added cpu_to_le32() macro to fix
   compilation warning reported by kernel test bot
 * In nandc_set_read_loc_last() api added cpu_to_le32() macro to fix
   compilation warning reported by kernel test bot
 * Changed data type of cw_offset, read_size, is_last_read_loc to
   u32 in nandc_set_read_loc() api to fix compilation warning reported
   by kernel test bot
 * In set_address() api added cpu_to_le32() macro to fix compilation
   warning reported by kernel test bot
 * In update_rw_regs() api added cpu_to_le32() macro to fix compilation
   warning reported by kernel test bot
 * In qcom_op_cmd_mapping() api added cpu_to_le32() macro to fix
   compilation warning reported by kernel test bot
 * In qcom_read_status_exec() api added cpu_to_le32() macro to fix
   compilation warning reported by kernel test bot
 * In qcom_read_id_type_exec() api added cpu_to_le32() macro to fix
   compilation warning reported by kernel test bot
 * In qcom_misc_cmd_type_exec() api added cpu_to_le32() macro to fix
   compilation warning reported by kernel test bot
 * In qcom_param_page_type_exec() api added cpu_to_le32() macro to fix
   compilation warning reported by kernel test bot   
 * In update_rw_regs() api added cpu_to_le32() macro to fix compilation
   issue reported by kernel test bot
 * In qcom_param_page_type_exec() api added cpu_to_le32() macro to fix
   compilation issue reported by kernel test bot
 * Changed data type of addr1, addr2, cmd, to __le32 in qpic_spi_nand
   structure
 * In qcom_spi_set_read_loc_first() api added cpu_to_le32() macro to fix
   compilation warning
 * In qcom_spi_set_read_loc_last() api added cpu_to_le32() macro to fix
   compilation warning
 * In qcom_spi_init() api added cpu_to_le32() macro to fix compilation
   warning
 * In qcom_spi_ecc_init_ctx_pipelined() api removed unused variables
   reqs, user, step_size, strength and added cpu_to_le32() macro as well
   to fix compilation warning
 * In qcom_spi_read_last_cw() api added cpu_to_le32() macro to fix
   compilation warning
 * In qcom_spi_check_error() api added cpu_to_le32() macro to fix
   compilation warning
 * In qcom_spi_read_page_ecc() api added cpu_to_le32() macro to fix
   compilation warning
 * In qcom_spi_read_page_oob() api added cpu_to_le32() macro to fix
   compilation warning
 * In qcom_spi_program_raw() api added cpu_to_le32() macro to fix
   compilation warning
 * In qcom_spi_program_ecc() api added cpu_to_le32() macro to fix
   compilation warning
 * In qcom_spi_program_oob() api added cpu_to_le32() macro to fix
   compilation warning
 * In qcom_spi_send_cmdaddr() api added cpu_to_le32() macro to fix
   compilation warning
 * In qcom_spi_io_op() api added cpu_to_le32() macro to fix compilation
    warning
v8:
 * Fixed compilation warning reported by kernel test robot
 * Added "chip" description in nandc_set_read_loc_first()
 * Added "chip" description" in nandc_set_read_loc_last()
 * Changed data type of read_location0, read_location1,
   read_location2, read_location3, addr0, addr1, cmd, cfg0,
   cfg1, ecc_bch_cfg, ecc_buf_cfg, clrflashstatus, clrreadstatus,
   orig_cmd1, orig_vld to __le32 to fix compilation warning.
 * Included bitfield.h header file in spi-qpic-snand.c to
   fix compilation warning
 * Removed unused variable "steps" variable from 
   qcom_spi_ecc_init_ctx_pipelined()

v7:
 * Added read_oob() and write_oob() api
 * Added FIELD_PREP() in spi init
 * Made CONFIG_SPI_QPIC_SNAND and CONFIG_MTD_NAND_QCOM
   as bool type
 * Removed offset 0 in oob_ecc() layout
 * Handled multiple error condition

v6:
 * Added FIELD_PREP() and GENMASK() macro
 * Added qpic_spi_nand{..} structure for
   spi nand realted variables
 * Made qpic_common.c slectable based on
   either CONFIG_MTD_NAND_QCOM or CONFIG_SPI_QPIC_SNAND
 * Removed rawnand.h from qpic-common.h 
 * Removed partitions.h and rawnand.h form spi-qpic-snand.c
 * Added qcom_nand_unalloc() in remove()

v5:
 * Fixes nandbiterr issue
 * Added raw_read() and raw_write() API
 * Added qcom_ prefix to all the common API
 * Removed register indirection
 * Following tests for SPI-NAND devices passed

   - mtd_oobtest
   - mtd_pagetest
   - mtd_readtest
   - mtd_speedtest
   - mtd_stresstest
   - mtd_subpagetest
   - mtd_nandbiterrs
   - nandtest
   - nanddump
   - nandwrite
   - nandbiterr -i
   - mtd erase
   - mtd write
   - dd
   - hexddump

v4:
 * In this patch series fixes kernel doc for all the cmmon api
 * Also fixes dm-binding commit message
 * Fix qpic_common.c compilation based on config

v3:
 * In this patch series fixes multiple things like
   added clock-name, added _alloc_controller api instead
   of alloc_master, made common apis more generic etc.

 * Addressed all the comment from v2 patch series

v2:
 * https://lore.kernel.org/linux-arm-msm/20240215134856.1313239-1-quic_mdalam@quicinc.com/
 * In this series of patchs we have added basic working QPIC SPI NAND
   driver with READ, WRITE, ERASE etc functionality

 * Addressed all the comments given in RFC [v1] patch

v1:
 * https://lore.kernel.org/linux-arm-msm/20231031120307.1600689-1-quic_mdalam@quicinc.com/
 * Initial set of patches for handling QPIC SPI NAND.


Md Sadre Alam (8):
  spi: dt-bindings: Introduce qcom,spi-qpic-snand
  mtd: rawnand: qcom: cleanup qcom_nandc driver
  mtd: rawnand: qcom: Add qcom prefix to common api
  mtd: nand: Add qpic_common API file
  mtd: rawnand: qcom: use FIELD_PREP and GENMASK
  spi: spi-qpic: add driver for QCOM SPI NAND flash Interface
  arm64: dts: qcom: ipq9574: Add SPI nand support
  arm64: dts: qcom: ipq9574: Remove eMMC node

 .../bindings/spi/qcom,spi-qpic-snand.yaml     |   83 +
 .../boot/dts/qcom/ipq9574-rdp-common.dtsi     |   43 +
 arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts   |   12 -
 arch/arm64/boot/dts/qcom/ipq9574.dtsi         |   27 +
 drivers/mtd/nand/Makefile                     |    6 +-
 drivers/mtd/nand/qpic_common.c                |  757 +++++++
 drivers/mtd/nand/raw/qcom_nandc.c             | 1763 +++--------------
 drivers/spi/Kconfig                           |    9 +
 drivers/spi/Makefile                          |    1 +
 drivers/spi/spi-qpic-snand.c                  | 1634 +++++++++++++++
 include/linux/mtd/nand-qpic-common.h          |  482 +++++
 11 files changed, 3364 insertions(+), 1453 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/spi/qcom,spi-qpic-snand.yaml
 create mode 100644 drivers/mtd/nand/qpic_common.c
 create mode 100644 drivers/spi/spi-qpic-snand.c
 create mode 100644 include/linux/mtd/nand-qpic-common.h