mtd: move NAND files into a raw/ subdirectory

NAND flavors, like serial and parallel, have a lot in common and would
benefit to share code. Let's move raw (parallel) NAND specific code in a
raw/ subdirectory, to ease the addition of a core file in nand/ and the
introduction of a spi/ subdirectory specific to SPI NANDs.

Signed-off-by: Miquel Raynal <[email protected]>

MAINTAINERS

@@ -298,7 +298,7 @@ F:	drivers/i2c/i2c-cdns.c
 F:	drivers/i2c/muxes/pca954x.c
 F:	drivers/i2c/zynq_i2c.c
 F:	drivers/mmc/zynq_sdhci.c
-F:	drivers/mtd/nand/zynq_nand.c
+F:	drivers/mtd/nand/raw/zynq_nand.c
 F:	drivers/net/phy/xilinx_phy.c
 F:	drivers/net/zynq_gem.c
 F:	drivers/serial/serial_zynq.c
@@ -322,7 +322,7 @@ F:	drivers/i2c/i2c-cdns.c
 F:	drivers/i2c/muxes/pca954x.c
 F:	drivers/i2c/zynq_i2c.c
 F:	drivers/mmc/zynq_sdhci.c
-F:	drivers/mtd/nand/zynq_nand.c
+F:	drivers/mtd/nand/raw/zynq_nand.c
 F:	drivers/net/phy/xilinx_phy.c
 F:	drivers/net/zynq_gem.c
 F:	drivers/serial/serial_zynq.c
@@ -467,7 +467,7 @@ NAND FLASH
 #M:	Scott Wood <[email protected]>
 S:	Orphaned (Since 2018-07)
 T:	git git://git.denx.de/u-boot-nand-flash.git
-F:	drivers/mtd/nand/
+F:	drivers/mtd/nand/raw/
 
 NDS32
 M:	Macpaul Lin <[email protected]>

Makefile

@@ -689,7 +689,7 @@ libs-y += drivers/dma/
 libs-y += drivers/gpio/
 libs-y += drivers/i2c/
 libs-y += drivers/mtd/
-libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
+libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/raw/
 libs-y += drivers/mtd/onenand/
 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
 libs-y += drivers/mtd/spi/

README

@@ -3256,8 +3256,8 @@ Low Level (hardware related) configuration options:
 		a 16 bit bus.
 		Not all NAND drivers use this symbol.
 		Example of drivers that use it:
-		- drivers/mtd/nand/ndfc.c
-		- drivers/mtd/nand/mxc_nand.c
+		- drivers/mtd/nand/raw/ndfc.c
+		- drivers/mtd/nand/raw/mxc_nand.c
 
 - CONFIG_SYS_NDFC_EBC0_CFG
 		Sets the EBC0_CFG register for the NDFC. If not defined
@@ -3374,7 +3374,7 @@ Low Level (hardware related) configuration options:
 - CONFIG_SYS_NAND_NO_SUBPAGE_WRITE
 		Option to disable subpage write in NAND driver
 		driver that uses this:
-		drivers/mtd/nand/davinci_nand.c
+		drivers/mtd/nand/raw/davinci_nand.c
 
 Freescale QE/FMAN Firmware Support:
 -----------------------------------

arch/arm/mach-uniphier/board_late_init.c

@@ -12,7 +12,7 @@
 #include <stdio.h>
 #include <linux/io.h>
 #include <linux/printk.h>
-#include <../drivers/mtd/nand/denali.h>
+#include <../drivers/mtd/nand/raw/denali.h>
 
 #include "init.h"
 

common/spl/Kconfig

@@ -487,7 +487,7 @@ config SPL_NAND_SUPPORT
 	help
 	  Enable support for NAND (Negative AND) flash in SPL. NAND flash
 	  can be used to allow SPL to load U-Boot from supported devices.
-	  This enables the drivers in drivers/mtd/nand as part of an SPL
+	  This enables the drivers in drivers/mtd/nand/raw as part of an SPL
 	  build.
 
 config SPL_NET_SUPPORT

common/spl/spl_spi.c

@@ -2,7 +2,7 @@
 /*
  * Copyright (C) 2011 OMICRON electronics GmbH
  *
- * based on drivers/mtd/nand/nand_spl_load.c
+ * based on drivers/mtd/nand/raw/nand_spl_load.c
  *
  * Copyright (C) 2011
  * Heiko Schocher, DENX Software Engineering, [email protected].

doc/README.SPL

@@ -57,11 +57,11 @@ CONFIG_SPL_FAT_SUPPORT (fs/fat/libfat.o)
 CONFIG_SPL_EXT_SUPPORT
 CONFIG_SPL_LIBGENERIC_SUPPORT (lib/libgeneric.o)
 CONFIG_SPL_POWER_SUPPORT (drivers/power/libpower.o)
-CONFIG_SPL_NAND_SUPPORT (drivers/mtd/nand/libnand.o)
+CONFIG_SPL_NAND_SUPPORT (drivers/mtd/nand/raw/libnand.o)
 CONFIG_SPL_DRIVERS_MISC_SUPPORT (drivers/misc)
 CONFIG_SPL_DMA_SUPPORT (drivers/dma/libdma.o)
 CONFIG_SPL_POST_MEM_SUPPORT (post/drivers/memory.o)
-CONFIG_SPL_NAND_LOAD (drivers/mtd/nand/nand_spl_load.o)
+CONFIG_SPL_NAND_LOAD (drivers/mtd/nand/raw/nand_spl_load.o)
 CONFIG_SPL_SPI_LOAD (drivers/mtd/spi/spi_spl_load.o)
 CONFIG_SPL_RAM_DEVICE (common/spl/spl.c)
 CONFIG_SPL_WATCHDOG_SUPPORT (drivers/watchdog/libwatchdog.o)

doc/README.arm-relocation

@@ -84,7 +84,7 @@ Relocation with SPL (example for the tx25 booting from NAND Flash):
 - cpu copies the first page from NAND to 0xbb000000 (IMX_NFC_BASE)
   and start with code execution on this address.
 
-- The First page contains u-boot code from drivers/mtd/nand/mxc_nand_spl.c
+- The First page contains u-boot code from drivers/mtd/nand/raw/mxc_nand_spl.c
   which inits the dram, cpu registers, reloacte itself to CONFIG_SPL_TEXT_BASE	and loads
   the "real" u-boot to CONFIG_SYS_NAND_U_BOOT_DST and starts execution
   @CONFIG_SYS_NAND_U_BOOT_START

doc/README.nand

@@ -116,7 +116,7 @@ Configuration Options:
       The maximum number of NAND chips per device to be supported.
 
    CONFIG_SYS_NAND_SELF_INIT
-      Traditionally, glue code in drivers/mtd/nand/nand.c has driven
+      Traditionally, glue code in drivers/mtd/nand/raw/nand.c has driven
       the initialization process -- it provides the mtd and nand
       structs, calls a board init function for a specific device,
       calls nand_scan(), and registers with mtd.
@@ -125,7 +125,7 @@ Configuration Options:
       run code between nand_scan_ident() and nand_scan_tail(), or other
       deviations from the "normal" flow.
 
-      If a board defines CONFIG_SYS_NAND_SELF_INIT, drivers/mtd/nand/nand.c
+      If a board defines CONFIG_SYS_NAND_SELF_INIT, drivers/mtd/nand/raw/nand.c
       will make one call to board_nand_init(), with no arguments.  That
       function is responsible for calling a driver init function for
       each NAND device on the board, that performs all initialization
@@ -280,7 +280,7 @@ NOTE:
 =====
 
 The Disk On Chip driver is currently broken and has been for some time.
-There is a driver in drivers/mtd/nand, taken from Linux, that works with
+There is a driver in drivers/mtd/nand/raw, taken from Linux, that works with
 the current NAND system but has not yet been adapted to the u-boot
 environment.
 

doc/README.zynq

@@ -63,7 +63,7 @@ bootmode strings at runtime.
   spi - drivers/spi/zynq_spi.c
   qspi - drivers/spi/zynq_qspi.c
   i2c - drivers/i2c/zynq_i2c.c
-  nand - drivers/mtd/nand/zynq_nand.c
+  nand - drivers/mtd/nand/raw/zynq_nand.c
 - Done proper cleanups on board configurations
 - Added basic FDT support for zynq boards
 - d-cache support for zynq_gem.c

drivers/Makefile

@@ -6,7 +6,7 @@ obj-$(CONFIG_$(SPL_TPL_)DRIVERS_MISC_SUPPORT) += misc/ sysreset/ firmware/
 obj-$(CONFIG_$(SPL_TPL_)I2C_SUPPORT) += i2c/
 obj-$(CONFIG_$(SPL_TPL_)LED) += led/
 obj-$(CONFIG_$(SPL_TPL_)MMC_SUPPORT) += mmc/
-obj-$(CONFIG_$(SPL_TPL_)NAND_SUPPORT) += mtd/nand/
+obj-$(CONFIG_$(SPL_TPL_)NAND_SUPPORT) += mtd/nand/raw/
 obj-$(CONFIG_$(SPL_TPL_)PHY) += phy/
 obj-$(CONFIG_$(SPL_TPL_)PINCTRL) += pinctrl/
 obj-$(CONFIG_$(SPL_TPL_)RAM) += ram/

drivers/mtd/Makefile

@@ -18,3 +18,5 @@ obj-$(CONFIG_FLASH_PIC32) += pic32_flash.o
 obj-$(CONFIG_ST_SMI) += st_smi.o
 obj-$(CONFIG_STM32_FLASH) += stm32_flash.o
 obj-$(CONFIG_RENESAS_RPC_HF) += renesas_rpc_hf.o
+
+obj-y += nand/