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path: root/drivers/mtd/nand/nuc900_nand.c
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2017-09-18mtd: nand: introduce NAND_ROW_ADDR_3 flagMasahiro Yamada
Several drivers check ->chipsize to see if the third row address cycle is needed. Instead of embedding magic sizes such as 32MB, 128MB in drivers, introduce a new flag NAND_ROW_ADDR_3 for clean-up. Since nand_scan_ident() knows well about the device, it can handle this properly. The flag is set if the row address bit width is greater than 16. Delete comments such as "One more address cycle for ..." because intention is now clear enough from the code. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Wenyou Yang <wenyou.yang@microchip.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-08-13mtd: nand: Rename nand.h into rawnand.hBoris Brezillon
We are planning to share more code between different NAND based devices (SPI NAND, OneNAND and raw NANDs), but before doing that we need to move the existing include/linux/mtd/nand.h file into include/linux/mtd/rawnand.h so we can later create a nand.h header containing all common structure and function prototypes. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Peter Pan <peterpandong@micron.com> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Acked-by: Wenyou Yang <wenyou.yang@microchip.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Han Xu <han.xu@nxp.com> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Shawn Guo <shawnguo@kernel.org> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-By: Harvey Hunt <harveyhuntnexus@gmail.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Krzysztof Halasa <khalasa@piap.pl>
2016-04-19mtd: nand: nuc900: set ECC algorithm explicitlyRafał Miłecki
This is part of process deprecating NAND_ECC_SOFT_BCH (and switching to enum nand_ecc_algo). Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2016-01-15mtd: nuc900_nand: read correct SMISR registerArnd Bergmann
The nuc900_nand driver has always passed an incorrect register address in its nuc900_check_rb() function, which cannot possibly work, and in some configurations gives us a build warning: drivers/mtd/nand/nuc900_nand.c: In function 'nuc900_check_rb': drivers/mtd/nand/nuc900_nand.c:27:23: warning: passing argument 1 of '__raw_readl' makes pointer from integer without a cast [-Wint-conversion] #define REG_SMISR 0xac drivers/mtd/nand/nuc900_nand.c:118:20: note: in expansion of macro 'REG_SMISR' val = __raw_readl(REG_SMISR); This makes sure we actually read from the register rather than from (void *)0x000000ac in user space. I suspect nobody noticed this before because the nuc900_nand_devready() function never gets called, or nobody uses this driver on an upstream kernel. Possibly even both. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-12-18mtd: nand: remove useless mtd->priv = chip assignmentsBoris BREZILLON
mtd_to_nand() now uses the container_of() approach to transform an mtd_info pointer into a nand_chip one. Drop useless mtd->priv assignments from NAND controller drivers. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-12-18mtd: nand: nuc900: use the mtd instance embedded in struct nand_chipBoris BREZILLON
struct nand_chip now embeds an mtd device. Make use of this mtd instance. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-12-18mtd: nand: nuc900: create and use mtd_to_nuc900()Boris BREZILLON
Create and use mtd_to_nuc900() instead of direct container_of() calls. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-12-08mtd: nand: make use of mtd_to_nand() in NAND driversBoris BREZILLON
mtd_to_nand() was recently introduced to avoid direct accesses to the mtd->priv field. Update all NAND drivers to use it. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: nuc900_nand: show parent device in sysfsFrans Klaver
Fix a bug where parent device symlinks aren't shown in sysfs. While at it, make use of the default owner value set by mtdcore. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-10-20mtd: nand: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-03-10mtd: nuc900_nand: NULL dereference in nuc900_nand_enable()Dan Carpenter
Instead of writing to "nand->reg + REG_FMICSR" we write to "REG_FMICSR" which is NULL and not a valid register. Fixes: 8bff82cbc308 ('mtd: add nand support for w90p910 (v2)') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-03-10mtd: nand: force NAND_CMD_READID onto 8-bit busBrian Norris
The NAND command helpers tend to automatically shift the column address for x16 bus devices, since most commands expect a word address, not a byte address. The Read ID command, however, expects an 8-bit address (i.e., 0x00, 0x20, or 0x40 should not be translated to 0x00, 0x10, or 0x20). This fixes the column address for a few drivers which imitate the nand_base defaults. Note that I don't touch sh_flctl.c, since it already handles this problem slightly differently (note its comment "READID is always performed using an 8-bit bus"). I have not tested this patch, as I only have x8 parts up for testing at this point. Hopefully that can change soon... Signed-off-by: Brian Norris <computersforpeace@gmail.com> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-By: Pekon Gupta <pekon@ti.com>
2014-03-10mtd: delete non-required instances of include <linux/init.h>Paul Gortmaker
None of these files are actually using any __init type directives and hence don't need to include <linux/init.h>. Most are just a left over from __devinit and __cpuinit removal, or simply due to code getting copied from one driver to the next. Cc: David Woodhouse <dwmw2@infradead.org> Cc: Brian Norris <computersforpeace@gmail.com> Cc: linux-mtd@lists.infradead.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> [Brian: dropped one incorrect hunk] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-01-20mtd: nuc900_nand: remove redundant return value check of platform_get_resource()Wei Yongjun
Remove unneeded error handling on the result of a call to platform_get_resource() when the value is passed to devm_ioremap_resource(). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Reviewed-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-01-03mtd: nuc900_nand: Use devm_*() functionsJingoo Han
Use devm_*() functions to make cleanup paths simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2013-08-05mtd: nand: nuc900_nand: remove unnecessary platform_set_drvdata()Jingoo Han
The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d (device-core: Ensure drvdata = NULL when no driver is bound). Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05mtd: nand: remove a bunch of unused commandsArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Acked-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-11-22mtd: remove use of __devexitBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-11-22mtd: remove use of __devinitBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-11-22mtd: remove use of __devexit_pBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-29mtd: kill MTD_NAND_VERIFY_WRITEHuang Shijie
Just as Artem suggested: "Both UBI and JFFS2 are able to read verify what they wrote already. There are also MTD tests which do this verification. So I think there is no reason to keep this in the NAND layer, let alone wasting RAM in the driver to support this feature. Besides, it does not work for sub-pages and many drivers have it broken. It hurts more than it provides benefits." So kill MTD_NAND_VERIFY_WRITE entirely. Signed-off-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: convert drivers/mtd/* to use module_platform_driver()Axel Lin
This patch converts the drivers in drivers/mtd/* to use the module_platform_driver() macro which makes the code smaller and a bit simpler. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-09-11mtd: nuc900_nand: add missing nand_release in nuc900_nand_removeAxel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-05-25mtd: convert remaining users to mtd_device_register()Jamie Iles
The older add_mtd_device()/add_mtd_partitions() and their removal counterparts will soon be gone. Replace uses with mtd_device_register() and mtd_device_unregister(). Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-01-01mtd: nand: rename w90p910_nand.c to nuc900_nand.cDavid Woodhouse
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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