mtd: m25p80: Fix Kconfig dependencies ...

The m25p80 driver now depends on MTD_SPI_NOR which is disabled in all
defconfigs, so this effectively disables the m25p80 driver in all
defconfigs. Fix this by selecting MTD_SPI_NOR which is library code
without further dependencies. Also let m25p80 depend on SPI because
it needs the SPI code and won't link without it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/spi-nor'

mtd: m25p80: use the SPI nor framework ...

Use the spi-nor framework for the m25p80 driver to de-duplicate the code base
and follow along with the linux kernel version, so bugfixes or features can be
easier integrated.

Based on the Linux v4.1-rc3 version of m25p80.c.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: spi-nor: add cadence quadspi driver ...

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: spi-nor: add SPI-NOR framework ...

Import the SPI-NOR framework from linux kernel v3.19.

Signed-off-by: Enrico Jorns <ejo@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Abolish cpu_read* and cpu_write* accessors ...

Commit 2e6a88f2101d (add cpu native ordered io accessors) introduced
these macros and then commit be57f20cdd7d (Fix big endian MMIO
primitives) figured out they are equivalent to __raw_{read,write}*.

They turned out unnecessary after all.  Anyway, most source files
use __raw_read* and __raw_write*.

Let's replace a few remaining references and abolish them.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: nand: Fix format specifier ...

'count' is of type size_t, so use %zx.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: Fix function prototype ...

mtd_op_protect must return int instead of size_t.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/of-device-id'

Merge branch 'for-next/misc'

mtd: of_mtd_fixup(): fix given DT not the default one ...

We have to start searching for the mtd node starting in the given root node not
the defaukt (= barebox internal) one. This means the internal DT is always
fixed up. This leads to booting not fixed up DT when using external DTs.

This patch fixes the problem.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: use 'const void *' for struct of_device_id.data ...

Since 2011 barebox' of_device_id struct uses unsigned long type for data field:

    struct of_device_id {
            char *compatible;
            unsigned long data;
    };

Almost always struct of_device_id.data field are used as pointer
and need 'unsigned long' casting.

E.g. see 'git grep -A 4 of_device_id drivers/' output:

    drivers/ata/sata-imx.c:static __maybe_unused struct of_device_id imx_sata_dt_ids[] = {
    drivers/ata/sata-imx.c- {
    drivers/ata/sata-imx.c-         .compatible = "fsl,imx6q-ahci",
    drivers/ata/sata-imx.c-         .data = (unsigned long)&data_imx6,
    drivers/ata/sata-imx.c- }, {

Here is of_device_id struct in linux kernel v4.0:

    struct of_device_id {
            char name[32];
            char type[32];
            char compatible[128];
            const void *data;
    };

Changing of_device_id.data type to 'const void *data' will increase
barebox' linux kernel compatibility and decrease number of 'unsigned
long' casts.

Part of the patch was done using the 'coccinelle' tool with the
following semantic patch:

    @rule1@
    identifier dev;
    identifier type;
    identifier func;
    @@
    func(...) {
    <...
    - dev_get_drvdata(dev, (unsigned long *)&type)
    + dev_get_drvdata(dev, (const void **)&type)
    ...>
    }
    @rule2@
    identifier dev;
    identifier type;
    identifier func;
    identifier data;
    @@
    func(...) {
    <...
    - dev_get_drvdata(dev, (unsigned long *)&type->data)
    + dev_get_drvdata(dev, (const void **)&type->data)
    ...>
    }

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: partition: Fix OF partition fixup ...

To get the number of address cells and size cells we have to use
the newly created partition node, not the parent device node. The
parent device node returns the address/size cells of the controller
node, not the partition node.

On an am335x machine this fixes the device tree passed to Linux.
The situation there is:
	...
	gpmc@50000000 {
		...
		#address-cells = <0x2>;
		#size-cells = <0x1>;
		ranges = <0x0 0x0 0x8000000 0x10000000>;
		...
		nand@0,0 {
			reg = <0x0 0x0 0x0>;
			#address-cells = <0x1>;
			#size-cells = <0x1>;
			...
			partition@7 {
				label = "system";
				reg = <0x220000 0x7de0000>;
			};
		};
	};

and without this patch barebox passes three bytes for
partition@7's reg property instead of only two which naturally
confuses Linux and yields to the system partition to start at 0
with a size of 0x220000.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

ubi: cdev: remove trailing newline from debug messages ...

This patch removes the trailing newline "\n" from the ubi/cdev.c debug
messages, as the macro ifself already adds a newine.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: m25p80: import ID for Winbond W25Q128FVSSI from linux ...

Winbond W25Q128FVSSI chip is used in Black Swift board,
(see http://www.black-swift.com for details).

Black Swift can run barebox for TP-LINK MR3020.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: nand_omap_gpmc: Fix ecc check for bch8 romcode ...

The bch8 romcode was only checked and corrected for the
first 512 bytes of a 2048 byte page. Set interation counter
and eccsizes correct for the different bch types.

Tested OMAP_ECC_BCH8_CODE_HW and OMAP_ECC_BCH8_CODE_HW_ROMCODE.

Reported-by: Gabor Janak <g.janak@agilion.de>
Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: nand_omap_gpmc: Remove unused code ...

The ecc layout structs are not used anywhere.

Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/streaming-dma' ...

Conflicts:
	drivers/mci/dw_mmc.c

Merge branch 'for-next/mtd-partitions'

ARM: move DMA alloc functions to dma.h ...

This better separates the DMA from the MMU functionality.

Also move all drivers that only depends on asm/mmu.h for the alloc
functions over to the common header.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: change dma_alloc/free_coherent to match other architectures ...

As a lot drivers currently rely on the 1:1 virt->phys mapping on ARM
we define DMA_ADDRESS_BROKEN to mark them. In order to use them on
other architectures with a different mapping they need proper fixing.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: fixup device tree partitions ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: Add a partitions parameter to mtd devices ...

The partitions parameter allows to partition a mtd device
using a standard cmdline partition description string. This
way the partitions of a mtd device can be changed at once.
The output of the string can be used to be passed to the kernel
as cmdline partition string. The partitions can also still be
changed with addpart/delpart, the partitions parameter will
be updated accordingly.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: Use flags parameter in mtd_add_partition ...

mtd_add_partition is passed a flag parameter. This has been unused
so the DEVFS_PARTITION_FIXED and DEVFS_PARTITION_READONLY were ignored.
Fix this.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: forbid conflicting mtd partitions ...

mtd partitions should not conflict with each other, so forbid this.
Also add the partitions to the partitions list sorted, so that they
can be easier translated into a cmdline partition string.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: nand: remove automatically created bb devices ...

the bb devices which are created in add_mtd_device() must be removed
in del_mtd_device(). Also remove deletion of the bb devices in the
mtdparts-add environment file.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: Add partitions to list ...

So that we can iterate over the existing partitions from the master
mtd device.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: partitions: Add error check ...

add_mtd_device can fail. Add an error check and bail out properly.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: partitions: Use xstrdup ...

The return value of strdup is not checked. Use xstrdup instead.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: core: add error checks ...

register_device and devfs_create can fail. Add error checks for these.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>