Use the nand_to_mtd() helper to access chip->mtd as done everywhere
else.
Signed-off-by: NBoris Brezillon <bbrezillon@kernel.org>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: NFrieder Schrempf <frieder.schrempf@kontron.de>

We just have to use nanddev_mtd_max_bad_blocks().
Signed-off-by: NBoris Brezillon <bbrezillon@kernel.org>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: NFrieder Schrempf <frieder.schrempf@kontron.de>

Will be used by the raw NAND framework.
Signed-off-by: NBoris Brezillon <bbrezillon@kernel.org>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: NFrieder Schrempf <frieder.schrempf@kontron.de>

Some drivers in the raw NAND framework seems to need this helper, so
let's just add it instead of open-coding the logic.
Signed-off-by: NBoris Brezillon <bbrezillon@kernel.org>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: NFrieder Schrempf <frieder.schrempf@kontron.de>

NAND datasheets usually give the maximum number of bad blocks per LUN
and this number can be used to help upper layers decide how much blocks
they should reserve for bad block handling.

Add a max_bad_eraseblocks_per_lun to the nand_memory_organization
struct and update the NAND_MEMORG() macro (and its users) accordingly.

We also provide a default mtd->_max_bad_blocks() implementation.
Signed-off-by: NBoris Brezillon <bbrezillon@kernel.org>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: NFrieder Schrempf <frieder.schrempf@kontron.de>

Specify the oob layout operation to avoid no oob scheme defined for
some nand flash.

Fixes: 8fae856c ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: NLiang Yang <liang.yang@amlogic.com>
Tested-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

of_match_device can return NULL if there is no matching device. Avoid
a potential NULL pointer dereference by checking for the return value
and passing the error upstream.
Signed-off-by: NAditya Pakki <pakki001@umn.edu>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The generic layout for BBT markers will most likely overlap with our
ECC bytes in the OOB, so move the BBT markers outside the OOB area.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The Ben Nanonote from Qi Hardware expects a specific OOB layout on its
NAND.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The boot ROM of the JZ4725B SoC expects a specific OOB layout on the
NAND, so we use it unconditionally in the ingenic-nand driver.

Also add the jz4725b-bch driver to support the JZ4725B-specific BCH
hardware.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

Add support for probing the ingenic-nand driver on the JZ4740 SoC from
Ingenic, and the jz4740-ecc driver to support the JZ4740-specific
ECC hardware.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

Use the 'ecc-engine' standard property instead of the custom
'ingenic,bch-controller' custom property, which is now deprecated.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The ingenic-nand driver uses an API provided by the jz4780-bch driver.
This makes it difficult to support other SoCs in the jz4780-bch driver.
To work around this, we separate the API functions from the SoC-specific
code, so that these API functions are SoC-agnostic.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The jz4780_bch_init name was confusing, as it suggested that its content
should be executed once at init time, whereas what the function really
does is reset the hardware for a new ECC operation.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The jz4780_nand driver will be modified to handle all the Ingenic
JZ47xx SoCs that the upstream Linux kernel supports (JZ4740, JZ4725B,
JZ4770, JZ4780), so it makes sense to rename it.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

Use SPDX license notifiers instead of GPLv2 license text in the headers.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Reviewed-by: NBoris Brezillon <bbrezillon@kernel.org>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

Before adding support for more SoCs and seeing the number of files for
these drivers grow, we move them to their own subfolder to keep it tidy.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The 'ingenic,bch-controller' property is now deprecated and the
'ecc-engine' property should be used instead.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The JZ4740 ECC hardware is not BCH but Reed-Solomon, so it makes more
sense to use the more generic ECC term.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

Add compatible strings to probe the jz4780-nand and jz4780-bch drivers
from devicetree on the JZ4725B and JZ4740 SoCs from Ingenic.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

meson_nfc_dma_buffer_setup() is called with the "info" buffer which is
allocated a few lines before using kzalloc(). If
meson_nfc_dma_buffer_setup() fails we need to free the allocated "info"
buffer instead of only freeing it upon success.

Fixes: 8fae856c ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: NLiang Yang <liang.yang@amlogic.com>
Reviewed-by: NKevin Hilman <khilman@baylibre.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

kzalloc() can return NULL if memory could not be allocated. Check the
return value of the kzalloc() call in meson_nfc_read_buf() to make it
consistent with other memory allocations within the meson_nand driver.

Fixes: 8fae856c ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: NLiang Yang <liang.yang@amlogic.com>
Reviewed-by: NKevin Hilman <khilman@baylibre.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

Adopt the SPDX license identifiers to ease license compliance
management.
Signed-off-by: NTudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The sam9x60 board defines the CCFG_EBICSA register under SFR,
and not as a MATRIX register, as previous boards do.

NAND Flash I/Os are connected to D16–D23, thus
SFR_CCFG_EBICSA.NFD0_ON_D16 is set to 1.
Signed-off-by: NTudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

Add compatibility string for the sam9x60 nand controller.
Signed-off-by: NTudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The sam9x60 board defines the CCFG_EBICSA register under SFR,
and not as a MATRIX register, as previous boards do. Add a
more generic name for the EBICSA regmap, as a prerequisite for
sam9x60 nand controller support.
Signed-off-by: NTudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The sam9x60 board defines the CCFG_EBICSA register under SFR,
and not as a MATRIX register, as previous boards do.
Signed-off-by: NTudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

Add compatibility string for the sam9x60 EBI.
Signed-off-by: NTudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

The sam9x60 board defines the CCFG_EBICSA register under SFR,
and not as a MATRIX register, as previous boards do. Add a
more generic name for the EBI regmap as a prerequisite for
sam9x60 ebi support.
Signed-off-by: NTudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

Keep generic names, as there are no conflicts with previous
SFR definitions.

While touching bits, update AT91_OHCIICR_USB_SUSPEND to use
GENMASK, replace unused AT91_OHCIICR_SUSPEND_A/B/C with a more
generic macro, align values on tab-width.
Signed-off-by: NTudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/mtd/nand/raw/diskonchip.c: In function ‘doc_probe’:
./include/linux/printk.h:303:2: warning: this statement may fall through [-Wimplicit-fallthrough=]
  printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/mtd/nand/raw/diskonchip.c:1479:4: note: in expansion of macro ‘pr_err’
    pr_err("DiskOnChip Millennium Plus 32MB is not supported, ignoring.\n");
    ^~~~~~
drivers/mtd/nand/raw/diskonchip.c:1480:3: note: here
   default:
   ^~~~~~~
drivers/mtd/nand/raw/nandsim.c: In function ‘ns_init_module’:
drivers/mtd/nand/raw/nandsim.c:2254:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
    chip->bbt_options |= NAND_BBT_NO_OOB;
drivers/mtd/nand/raw/nandsim.c:2255:2: note: here
  case 1:
  ^~~~
drivers/mtd/nand/raw/nuc900_nand.c: In function ‘nuc900_nand_command_lp’:
./arch/x86/include/asm/io.h:91:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define __raw_writel __writel
drivers/mtd/nand/raw/nuc900_nand.c:52:2: note: in expansion of macro ‘__raw_writel’
  __raw_writel((val), (dev)->reg + REG_SMCMD)
  ^~~~~~~~~~~~
drivers/mtd/nand/raw/nuc900_nand.c:196:3: note: in expansion of macro ‘write_cmd_reg’
   write_cmd_reg(nand, NAND_CMD_READSTART);
   ^~~~~~~~~~~~~
drivers/mtd/nand/raw/nuc900_nand.c:197:2: note: here
  default:
  ^~~~~~~
drivers/mtd/nand/raw/omap_elm.c: In function ‘elm_context_restore’:
drivers/mtd/nand/raw/omap_elm.c:512:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
    elm_write_reg(info, ELM_SYNDROME_FRAGMENT_4 + offset,
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      regs->elm_syndrome_fragment_4[i]);
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/mtd/nand/raw/omap_elm.c:514:3: note: here
   case BCH8_ECC:
   ^~~~
drivers/mtd/nand/raw/omap_elm.c:517:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
    elm_write_reg(info, ELM_SYNDROME_FRAGMENT_2 + offset,
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      regs->elm_syndrome_fragment_2[i]);
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/mtd/nand/raw/omap_elm.c:519:3: note: here
   case BCH4_ECC:
   ^~~~
drivers/mtd/nand/raw/omap_elm.c: In function ‘elm_context_save’:
drivers/mtd/nand/raw/omap_elm.c:466:37: warning: this statement may fall through [-Wimplicit-fallthrough=]
    regs->elm_syndrome_fragment_4[i] = elm_read_reg(info,
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
      ELM_SYNDROME_FRAGMENT_4 + offset);
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/mtd/nand/raw/omap_elm.c:468:3: note: here
   case BCH8_ECC:
   ^~~~
drivers/mtd/nand/raw/omap_elm.c:471:37: warning: this statement may fall through [-Wimplicit-fallthrough=]
    regs->elm_syndrome_fragment_2[i] = elm_read_reg(info,
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
      ELM_SYNDROME_FRAGMENT_2 + offset);
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/mtd/nand/raw/omap_elm.c:473:3: note: here
   case BCH4_ECC:
   ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enabling
-Wimplicit-fallthrough.
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

Introduce a GPMI_IS_MXS() macro to take into account the cases
when mx23 or mx28 are used, which helps readability.
Signed-off-by: NFabio Estevam <festevam@gmail.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

Make use of the spi-mem direct mapping API to let advanced controllers
optimize read/write operations when they support direct mapping.
Signed-off-by: NBoris Brezillon <bbrezillon@kernel.org>
Cc: Stefan Roese <sr@denx.de>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Tested-by: NStefan Roese <sr@denx.de>

Pull more Kbuild updates from Masahiro Yamada:

 - add more Build-Depends to Debian source package

 - prefix header search paths with $(srctree)/

 - make modpost show verbose section mismatch warnings

 - avoid hard-coded CROSS_COMPILE for h8300

 - fix regression for Debian make-kpkg command

 - add semantic patch to detect missing put_device()

 - fix some warnings of 'make deb-pkg'

 - optimize NOSTDINC_FLAGS evaluation

 - add warnings about redundant generic-y

 - clean up Makefiles and scripts

* tag 'kbuild-v5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: remove stale lxdialog/.gitignore
  kbuild: force all architectures except um to include mandatory-y
  kbuild: warn redundant generic-y
  Revert "modsign: Abort modules_install when signing fails"
  kbuild: Make NOSTDINC_FLAGS a simply expanded variable
  kbuild: deb-pkg: avoid implicit effects
  coccinelle: semantic code search for missing put_device()
  kbuild: pkg: grep include/config/auto.conf instead of $KCONFIG_CONFIG
  kbuild: deb-pkg: introduce is_enabled and if_enabled_echo to builddeb
  kbuild: deb-pkg: add CONFIG_ prefix to kernel config options
  kbuild: add workaround for Debian make-kpkg
  kbuild: source include/config/auto.conf instead of ${KCONFIG_CONFIG}
  unicore32: simplify linker script generation for decompressor
  h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux-
  kbuild: move archive command to scripts/Makefile.lib
  modpost: always show verbose warning for section mismatch
  ia64: prefix header search path with $(srctree)/
  libfdt: prefix header search paths with $(srctree)/
  deb-pkg: generate correct build dependencies

Pull x86 asm updates from Thomas Gleixner:
 "Two cleanup patches removing dead conditionals and unused code"

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/asm: Remove unused __constant_c_x_memset() macro and inlines
  x86/asm: Remove dead __GNUC__ conditionals

Pull perf fixes from Thomas Gleixner:
 "Three fixes for the fallout from the TSX errata workaround:

   - Prevent memory corruption caused by a unchecked out of bound array
     index.

   - Two trivial fixes to address compiler warnings"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Make dev_attr_allow_tsx_force_abort static
  perf/x86: Fixup typo in stub functions
  perf/x86/intel: Fix memory corruption

Pull xen fix from Juergen Gross:
 "A fix for a Xen bug introduced by David's series for excluding
  ballooned pages in vmcores"

* tag 'for-linus-5.1b-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/balloon: Fix mapping PG_offline pages to user space

Pull 9p updates from Dominique Martinet:
 "Here is a 9p update for 5.1; there honestly hasn't been much.

  Two fixes (leak on invalid mount argument and possible deadlock on
  i_size update on 32bit smp) and a fall-through warning cleanup"

* tag '9p-for-5.1' of git://github.com/martinetd/linux:
  9p/net: fix memory leak in p9_client_create
  9p: use inode->i_lock to protect i_size_write() under 32-bit
  9p: mark expected switch fall-through

Fixes: 400816f6 ("perf/x86/intel: Implement support for TSX Force Abort")
Signed-off-by: Nkbuild test robot <lkp@intel.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: kbuild-all@01.org
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190313184243.GA10820@lkp-sb-ep06