Merge tag 'for-linus-20130509' of git://git.infradead.org/linux-mtd

Pull MTD update from David Woodhouse:

 - Lots of cleanups from Artem, including deletion of some obsolete
   drivers

 - Support partitions larger than 4GiB in device tree

 - Support for new SPI chips

* tag 'for-linus-20130509' of git://git.infradead.org/linux-mtd: (83 commits)
  mtd: omap2: Use module_platform_driver()
  mtd: bf5xx_nand: Use module_platform_driver()
  mtd: denali_dt: Remove redundant use of of_match_ptr
  mtd: denali_dt: Change return value to fix smatch warning
  mtd: denali_dt: Use module_platform_driver()
  mtd: denali_dt: Fix incorrect error check
  mtd: nand: subpage write support for hardware based ECC schemes
  mtd: omap2: use msecs_to_jiffies()
  mtd: nand_ids: use size macros
  mtd: nand_ids: improve LEGACY_ID_NAND macro a bit
  mtd: add 4 Toshiba nand chips for the full-id case
  mtd: add the support to parse out the full-id nand type
  mtd: add new fields to nand_flash_dev{}
  mtd: sh_flctl: Use of_match_ptr() macro
  mtd: gpio: Use of_match_ptr() macro
  mtd: gpio: Use devm_kzalloc()
  mtd: davinci_nand: Use of_match_ptr()
  mtd: dataflash: Use of_match_ptr() macro
  mtd: remove h720x flash support
  mtd: onenand: remove OneNAND simulator
  ...

Documentation/ABI/testing/sysfs-class-mtd

@@ -14,17 +14,15 @@ Description:
 		The /sys/class/mtd/mtd{0,1,2,3,...} directories correspond
 		to each /dev/mtdX character device.  These may represent
 		physical/simulated flash devices, partitions on a flash
-		device, or concatenated flash devices.  They exist regardless
-		of whether CONFIG_MTD_CHAR is actually enabled.
+		device, or concatenated flash devices.
 
 What:		/sys/class/mtd/mtdXro/
 Date:		April 2009
 KernelVersion:	2.6.29
 Contact:	[email protected]
 Description:
 		These directories provide the corresponding read-only device
-		nodes for /sys/class/mtd/mtdX/ .  They are only created
-		(for the benefit of udev) if CONFIG_MTD_CHAR is enabled.
+		nodes for /sys/class/mtd/mtdX/ .
 
 What:		/sys/class/mtd/mtdX/dev
 Date:		April 2009

Documentation/devicetree/bindings/mtd/partition.txt

@@ -5,8 +5,12 @@ on platforms which have strong conventions about which portions of a flash are
 used for what purposes, but which don't use an on-flash partition table such
 as RedBoot.
 
-#address-cells & #size-cells must both be present in the mtd device and be
-equal to 1.
+#address-cells & #size-cells must both be present in the mtd device. There are
+two valid values for both:
+<1>: for partitions that require a single 32-bit cell to represent their
+     size/address (aka the value is below 4 GiB)
+<2>: for partitions that require two 32-bit cells to represent their
+     size/address (aka the value is 4 GiB or greater).
 
 Required properties:
 - reg : The partition's offset and size within the mtd bank.
@@ -36,3 +40,31 @@ flash@0 {
 		reg = <0x0100000 0x200000>;
 	};
 };
+
+flash@1 {
+	#address-cells = <1>;
+	#size-cells = <2>;
+
+	/* a 4 GiB partition */
+	partition@0 {
+		label = "filesystem";
+		reg = <0x00000000 0x1 0x00000000>;
+	};
+};
+
+flash@2 {
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	/* an 8 GiB partition */
+	partition@0 {
+		label = "filesystem #1";
+		reg = <0x0 0x00000000 0x2 0x00000000>;
+	};
+
+	/* a 4 GiB partition */
+	partition@200000000 {
+		label = "filesystem #2";
+		reg = <0x2 0x00000000 0x1 0x00000000>;
+	};
+};

arch/arm/mach-pxa/Kconfig

@@ -162,7 +162,6 @@ config MACH_XCEP
 	select MTD
 	select MTD_CFI
 	select MTD_CFI_INTELEXT
-	select MTD_CHAR
 	select MTD_PHYSMAP
 	select PXA25x
 	select SMC91X

arch/cris/Kconfig

@@ -264,7 +264,6 @@ config ETRAX_AXISFLASHMAP
 	select MTD_CFI
 	select MTD_CFI_AMDSTD
 	select MTD_JEDECPROBE if ETRAX_ARCH_V32
-	select MTD_CHAR
 	select MTD_BLOCK
 	select MTD_COMPLEX_MAPPINGS
 	help

arch/cris/arch-v32/drivers/Kconfig

@@ -404,7 +404,6 @@ config ETRAX_AXISFLASHMAP
 	select MTD_CFI
 	select MTD_CFI_AMDSTD
 	select MTD_JEDECPROBE
-	select MTD_CHAR
 	select MTD_BLOCK
 	select MTD_COMPLEX_MAPPINGS
 	help

drivers/bcma/driver_mips.c

@@ -21,7 +21,7 @@
 #include <linux/serial_reg.h>
 #include <linux/time.h>
 
-static const char *part_probes[] = { "bcm47xxpart", NULL };
+static const char * const part_probes[] = { "bcm47xxpart", NULL };
 
 static struct physmap_flash_data bcma_pflash_data = {
 	.part_probe_types	= part_probes,

drivers/mtd/Kconfig

@@ -157,19 +157,6 @@ config MTD_BCM47XX_PARTS
 
 comment "User Modules And Translation Layers"
 
-config MTD_CHAR
-	tristate "Direct char device access to MTD devices"
-	help
-	  This provides a character device for each MTD device present in
-	  the system, allowing the user to read and write directly to the
-	  memory chips, and also use ioctl() to obtain information about
-	  the device, or to erase parts of it.
-
-config HAVE_MTD_OTP
-	bool
-	help
-	  Enable access to OTP regions using MTD_CHAR.
-
 config MTD_BLKDEVS
 	tristate "Common interface to block layer for MTD 'translation layers'"
 	depends on BLOCK

drivers/mtd/Makefile

@@ -4,7 +4,7 @@
 
 # Core functionality.
 obj-$(CONFIG_MTD)		+= mtd.o
-mtd-y				:= mtdcore.o mtdsuper.o mtdconcat.o mtdpart.o
+mtd-y				:= mtdcore.o mtdsuper.o mtdconcat.o mtdpart.o mtdchar.o
 
 obj-$(CONFIG_MTD_OF_PARTS)	+= ofpart.o
 obj-$(CONFIG_MTD_REDBOOT_PARTS) += redboot.o
@@ -15,7 +15,6 @@ obj-$(CONFIG_MTD_BCM63XX_PARTS)	+= bcm63xxpart.o
 obj-$(CONFIG_MTD_BCM47XX_PARTS)	+= bcm47xxpart.o
 
 # 'Users' - code which presents functionality to userspace.
-obj-$(CONFIG_MTD_CHAR)		+= mtdchar.o
 obj-$(CONFIG_MTD_BLKDEVS)	+= mtd_blkdevs.o
 obj-$(CONFIG_MTD_BLOCK)		+= mtdblock.o
 obj-$(CONFIG_MTD_BLOCK_RO)	+= mtdblock_ro.o

drivers/mtd/chips/Kconfig

@@ -146,7 +146,6 @@ config MTD_CFI_I8
 config MTD_OTP
 	bool "Protection Registers aka one-time programmable (OTP) bits"
 	depends on MTD_CFI_ADV_OPTIONS
-	select HAVE_MTD_OTP
 	default n
 	help
 	  This enables support for reading, writing and locking so called

drivers/mtd/devices/Kconfig

@@ -71,7 +71,6 @@ config MTD_DATAFLASH_WRITE_VERIFY
 config MTD_DATAFLASH_OTP
 	bool "DataFlash OTP support (Security Register)"
 	depends on MTD_DATAFLASH
-	select HAVE_MTD_OTP
 	help
 	  Newer DataFlash chips (revisions C and D) support 128 bytes of
 	  one-time-programmable (OTP) data.  The first half may be written
@@ -205,69 +204,6 @@ config MTD_BLOCK2MTD
 
 comment "Disk-On-Chip Device Drivers"
 
-config MTD_DOC2000
-	tristate "M-Systems Disk-On-Chip 2000 and Millennium (DEPRECATED)"
-	depends on MTD_NAND
-	select MTD_DOCPROBE
-	select MTD_NAND_IDS
-	---help---
-	  This provides an MTD device driver for the M-Systems DiskOnChip
-	  2000 and Millennium devices.  Originally designed for the DiskOnChip
-	  2000, it also now includes support for the DiskOnChip Millennium.
-	  If you have problems with this driver and the DiskOnChip Millennium,
-	  you may wish to try the alternative Millennium driver below. To use
-	  the alternative driver, you will need to undefine DOC_SINGLE_DRIVER
-	  in the <file:drivers/mtd/devices/docprobe.c> source code.
-
-	  If you use this device, you probably also want to enable the NFTL
-	  'NAND Flash Translation Layer' option below, which is used to
-	  emulate a block device by using a kind of file system on the flash
-	  chips.
-
-	  NOTE: This driver is deprecated and will probably be removed soon.
-	  Please try the new DiskOnChip driver under "NAND Flash Device
-	  Drivers".
-
-config MTD_DOC2001
-	tristate "M-Systems Disk-On-Chip Millennium-only alternative driver (DEPRECATED)"
-	depends on MTD_NAND
-	select MTD_DOCPROBE
-	select MTD_NAND_IDS
-	---help---
-	  This provides an alternative MTD device driver for the M-Systems
-	  DiskOnChip Millennium devices.  Use this if you have problems with
-	  the combined DiskOnChip 2000 and Millennium driver above.  To get
-	  the DiskOnChip probe code to load and use this driver instead of
-	  the other one, you will need to undefine DOC_SINGLE_DRIVER near
-	  the beginning of <file:drivers/mtd/devices/docprobe.c>.
-
-	  If you use this device, you probably also want to enable the NFTL
-	  'NAND Flash Translation Layer' option below, which is used to
-	  emulate a block device by using a kind of file system on the flash
-	  chips.
-
-	  NOTE: This driver is deprecated and will probably be removed soon.
-	  Please try the new DiskOnChip driver under "NAND Flash Device
-	  Drivers".
-
-config MTD_DOC2001PLUS
-	tristate "M-Systems Disk-On-Chip Millennium Plus"
-	depends on MTD_NAND
-	select MTD_DOCPROBE
-	select MTD_NAND_IDS
-	---help---
-	  This provides an MTD device driver for the M-Systems DiskOnChip
-	  Millennium Plus devices.
-
-	  If you use this device, you probably also want to enable the INFTL
-	  'Inverse NAND Flash Translation Layer' option below, which is used
-	  to emulate a block device by using a kind of file system on the
-	  flash chips.
-
-	  NOTE: This driver will soon be replaced by the new DiskOnChip driver
-	  under "NAND Flash Device Drivers" (currently that driver does not
-	  support all Millennium Plus devices).
-
 config MTD_DOCG3
 	tristate "M-Systems Disk-On-Chip G3"
 	select BCH

drivers/mtd/devices/Makefile

@@ -2,12 +2,7 @@
 # linux/drivers/mtd/devices/Makefile
 #
 
-obj-$(CONFIG_MTD_DOC2000)	+= doc2000.o
-obj-$(CONFIG_MTD_DOC2001)	+= doc2001.o
-obj-$(CONFIG_MTD_DOC2001PLUS)	+= doc2001plus.o
 obj-$(CONFIG_MTD_DOCG3)		+= docg3.o
-obj-$(CONFIG_MTD_DOCPROBE)	+= docprobe.o
-obj-$(CONFIG_MTD_DOCECC)	+= docecc.o
 obj-$(CONFIG_MTD_SLRAM)		+= slram.o
 obj-$(CONFIG_MTD_PHRAM)		+= phram.o
 obj-$(CONFIG_MTD_PMC551)	+= pmc551.o

drivers/mtd/devices/bcm47xxsflash.c

@@ -10,7 +10,7 @@
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Serial flash driver for BCMA bus");
 
-static const char *probes[] = { "bcm47xxpart", NULL };
+static const char * const probes[] = { "bcm47xxpart", NULL };
 
 static int bcm47xxsflash_read(struct mtd_info *mtd, loff_t from, size_t len,
 			      size_t *retlen, u_char *buf)
@@ -61,6 +61,17 @@ static int bcm47xxsflash_bcma_probe(struct platform_device *pdev)
 	}
 	sflash->priv = b47s;
 
+	b47s->bcma_cc = container_of(sflash, struct bcma_drv_cc, sflash);
+
+	switch (b47s->bcma_cc->capabilities & BCMA_CC_CAP_FLASHT) {
+	case BCMA_CC_FLASHT_STSER:
+		b47s->type = BCM47XXSFLASH_TYPE_ST;
+		break;
+	case BCMA_CC_FLASHT_ATSER:
+		b47s->type = BCM47XXSFLASH_TYPE_ATMEL;
+		break;
+	}
+
 	b47s->window = sflash->window;
 	b47s->blocksize = sflash->blocksize;
 	b47s->numblocks = sflash->numblocks;

drivers/mtd/devices/bcm47xxsflash.h

@@ -3,7 +3,66 @@
 
 #include <linux/mtd/mtd.h>
 
+/* Used for ST flashes only. */
+#define OPCODE_ST_WREN		0x0006		/* Write Enable */
+#define OPCODE_ST_WRDIS		0x0004		/* Write Disable */
+#define OPCODE_ST_RDSR		0x0105		/* Read Status Register */
+#define OPCODE_ST_WRSR		0x0101		/* Write Status Register */
+#define OPCODE_ST_READ		0x0303		/* Read Data Bytes */
+#define OPCODE_ST_PP		0x0302		/* Page Program */
+#define OPCODE_ST_SE		0x02d8		/* Sector Erase */
+#define OPCODE_ST_BE		0x00c7		/* Bulk Erase */
+#define OPCODE_ST_DP		0x00b9		/* Deep Power-down */
+#define OPCODE_ST_RES		0x03ab		/* Read Electronic Signature */
+#define OPCODE_ST_CSA		0x1000		/* Keep chip select asserted */
+#define OPCODE_ST_SSE		0x0220		/* Sub-sector Erase */
+
+/* Used for Atmel flashes only. */
+#define OPCODE_AT_READ				0x07e8
+#define OPCODE_AT_PAGE_READ			0x07d2
+#define OPCODE_AT_STATUS			0x01d7
+#define OPCODE_AT_BUF1_WRITE			0x0384
+#define OPCODE_AT_BUF2_WRITE			0x0387
+#define OPCODE_AT_BUF1_ERASE_PROGRAM		0x0283
+#define OPCODE_AT_BUF2_ERASE_PROGRAM		0x0286
+#define OPCODE_AT_BUF1_PROGRAM			0x0288
+#define OPCODE_AT_BUF2_PROGRAM			0x0289
+#define OPCODE_AT_PAGE_ERASE			0x0281
+#define OPCODE_AT_BLOCK_ERASE			0x0250
+#define OPCODE_AT_BUF1_WRITE_ERASE_PROGRAM	0x0382
+#define OPCODE_AT_BUF2_WRITE_ERASE_PROGRAM	0x0385
+#define OPCODE_AT_BUF1_LOAD			0x0253
+#define OPCODE_AT_BUF2_LOAD			0x0255
+#define OPCODE_AT_BUF1_COMPARE			0x0260
+#define OPCODE_AT_BUF2_COMPARE			0x0261
+#define OPCODE_AT_BUF1_REPROGRAM		0x0258
+#define OPCODE_AT_BUF2_REPROGRAM		0x0259
+
+/* Status register bits for ST flashes */
+#define SR_ST_WIP		0x01		/* Write In Progress */
+#define SR_ST_WEL		0x02		/* Write Enable Latch */
+#define SR_ST_BP_MASK		0x1c		/* Block Protect */
+#define SR_ST_BP_SHIFT		2
+#define SR_ST_SRWD		0x80		/* Status Register Write Disable */
+
+/* Status register bits for Atmel flashes */
+#define SR_AT_READY		0x80
+#define SR_AT_MISMATCH		0x40
+#define SR_AT_ID_MASK		0x38
+#define SR_AT_ID_SHIFT		3
+
+struct bcma_drv_cc;
+
+enum bcm47xxsflash_type {
+	BCM47XXSFLASH_TYPE_ATMEL,
+	BCM47XXSFLASH_TYPE_ST,
+};
+
 struct bcm47xxsflash {
+	struct bcma_drv_cc *bcma_cc;
+
+	enum bcm47xxsflash_type type;
+
 	u32 window;
 	u32 blocksize;
 	u16 numblocks;