aboutsummaryrefslogtreecommitdiff
path: root/drivers/mtd
AgeCommit message (Collapse)Author
2013-09-17mtd: nand: pxa3xx: Remove unneeded ifdef CONFIG_OFEzequiel Garcia
There's no need to enclose this code within idef CONFIG_OF, because the OF framework provides no-op stubs if CONFIG_OF=n. Cc: devicetree@vger.kernel.org Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-16Merge tag 'upstream-3.12-rc1' of git://git.infradead.org/linux-ubiLinus Torvalds
Pull UBI fixes from Artem Bityutskiy: "Just a single fastmap fix plus a regression fix" * tag 'upstream-3.12-rc1' of git://git.infradead.org/linux-ubi: UBI: Fix invalidate_fastmap() UBI: Fix PEB leak in wear_leveling_worker()
2013-09-09Merge tag 'for-linus-20130909' of git://git.infradead.org/linux-mtdLinus Torvalds
Pull mtd updates from David Woodhouse: - factor out common code from MTD tests - nand-gpio cleanup and portability to non-ARM - m25p80 support for 4-byte addressing chips, other new chips - pxa3xx cleanup and support for new platforms - remove obsolete alauda, octagon-5066 drivers - erase/write support for bcm47xxsflash - improve detection of ECC requirements for NAND, controller setup - NFC acceleration support for atmel-nand, read/write via SRAM - etc * tag 'for-linus-20130909' of git://git.infradead.org/linux-mtd: (184 commits) mtd: chips: Add support for PMC SPI Flash chips in m25p80.c mtd: ofpart: use for_each_child_of_node() macro mtd: mtdswap: replace strict_strtoul() with kstrtoul() mtd cs553x_nand: use kzalloc() instead of memset mtd: atmel_nand: fix error return code in atmel_nand_probe() mtd: bcm47xxsflash: writing support mtd: bcm47xxsflash: implement erasing support mtd: bcm47xxsflash: convert to module_platform_driver instead of init/exit mtd: bcm47xxsflash: convert kzalloc to avoid invalid access mtd: remove alauda driver mtd: nand: mxc_nand: mark 'const' properly mtd: maps: cfi_flagadm: add missing __iomem annotation mtd: spear_smi: add missing __iomem annotation mtd: r852: Staticize local symbols mtd: nandsim: Staticize local symbols mtd: impa7: add missing __iomem annotation mtd: sm_ftl: Staticize local symbols mtd: m25p80: add support for mr25h10 mtd: m25p80: make CONFIG_M25PXX_USE_FAST_READ safe to enable mtd: m25p80: Pass flags through CAT25_INFO macro ...
2013-08-30mtd: chips: Add support for PMC SPI Flash chips in m25p80.cMichel Stempin
Add support for PMC (now Chingis, part of ISSI) Pm25LV512 (512 Kib), Pm25LV010 (1 Mib) and Pm25LQ032 (32 Mib) SPI Flash chips. This patch addresses two generations of PMC SPI Flash chips: - Pm25LV512 and Pm25LV010: these have 4KiB sectors and 32KiB blocks. The 4KiB sector erase uses a non-standard opcode (0xd7). They do not support JEDEC RDID (0x9f), and so they can only be detected by matching their name string with pre-configured platform data. Because of the cascaded acquisitions, the datasheet is no longer available on the current manufacturer's website, although it is still commonly used in some recent wireless routers (<https://forum.openwrt.org/viewtopic.php?pid=186360#p186360>). The only public datasheet available seems to be on GeoCities: <http://www.geocities.jp/scottle556/pdf/Pm25LV512-010.pdf> - Pm25LQ032: a newer generation flash, with 4KiB sectors and 64KiB blocks. It uses the standard erase and JEDEC read-ID opcodes. Manufacturer's datasheet is here: <http://www.chingistek.com/img/Product_Files/Pm25LQ032C%20datasheet%20v1.6.1.pdf> This patch is resent in order to take into account both Brian Norris remarks and this upstream patch: commit e534ee4f9ca29fdb38eea4b0c53f2154fbd8c1ee Author: Krzysztof Mazur <krzysiek@podlesie.net> Date: Fri Feb 22 15:51:05 2013 +0100 mtd: m25p80: introduce SST_WRITE flag for SST byte programming Not all SST devices implement the SST byte programming command. Some devices (like SST25VF064C) implement only standard m25p80 page write command. Now SPI flash devices that need sst_write() are explicitly marked with new SST_WRITE flag and the decision to use sst_write() is based on this flag instead of manufacturer id. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Michel Stempin <michel.stempin@wanadoo.fr> [Brian: fixed conflict] Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: ofpart: use for_each_child_of_node() macroWei Yongjun
Use for_each_child_of_node() macro instead of open coding it. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Huang Shijie <b32955@freescale.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: mtdswap: replace strict_strtoul() with kstrtoul()Jingoo Han
The usage of strict_strtoul() is not preferred, because strict_strtoul() is obsolete. Thus, kstrtoul() should be used. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd cs553x_nand: use kzalloc() instead of memsetDan Carpenter
It's cleaner to use kzalloc() instead of zeroing out in a separate call to memset(). Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: atmel_nand: fix error return code in atmel_nand_probe()Wei Yongjun
Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: bcm47xxsflash: writing supportRafał Miłecki
Tested with BCM4706. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: bcm47xxsflash: implement erasing supportRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: bcm47xxsflash: convert to module_platform_driver instead of init/exitLibo Chen
convert to module_platform_driver instead of init/exit Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Libo chen <libo.chen@huawei.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: bcm47xxsflash: convert kzalloc to avoid invalid accessLibo Chen
mtd is just member of bcm47xxsflash, so we should free bcm47xxsflash not its member. So I use devm_kazlloc instead of kazlloc to avoid it. * Changelog: convert to devm_kzalloc Signed-off-by: Libo chen <libo.chen@huawei.com> Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> [Brian: fixed conflicts] Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: remove alauda driverJussi Kivilinna
The driver has very low utility. Devices in question are limited to about 400kB/s and the only known user (me) discarded the hardware several years back. Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: mxc_nand: mark 'const' properlyJingoo Han
The values pointed by the pointer are used as read-only. Also, mtd_device_parse_register() uses 'part_probes[]' as the second argument which is defined as 'const char * const *types'. Thus, the 'const' should be moved to be after the '*'. drivers/mtd/nand/mxc_nand.c:269:25: warning: duplicate const Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: maps: cfi_flagadm: add missing __iomem annotationJingoo Han
Added missing __iomem annotation and staticized local symbols in order to fix the following sparse warnings: drivers/mtd/maps/cfi_flagadm.c:58:17: warning: symbol 'flagadm_map' was not declared. Should it be static? drivers/mtd/maps/cfi_flagadm.c:64:22: warning: symbol 'flagadm_parts' was not declared. Should it be static? drivers/mtd/maps/cfi_flagadm.c:115:18: warning: cast removes address space of expression drivers/mtd/maps/cfi_flagadm.c:115:18: warning: incorrect type in argument 1 (different address spaces) drivers/mtd/maps/cfi_flagadm.c:115:18: expected void volatile [noderef] <asn:2>*addr drivers/mtd/maps/cfi_flagadm.c:115:18: got void *<noident> drivers/mtd/maps/cfi_flagadm.c:126:26: warning: cast removes address space of expression drivers/mtd/maps/cfi_flagadm.c:126:26: warning: incorrect type in argument 1 (different address spaces) drivers/mtd/maps/cfi_flagadm.c:126:26: expected void volatile [noderef] <asn:2>*addr drivers/mtd/maps/cfi_flagadm.c:126:26: got void *<noident> drivers/mtd/maps/cfi_flagadm.c:127:36: warning: Using plain integer as NULL pointer Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: spear_smi: add missing __iomem annotationJingoo Han
Added missing __iomem annotation in order to fix the following sparse warnings: drivers/mtd/devices/spear_smi.c:566:13: warning: incorrect type in assignment (different address spaces) drivers/mtd/devices/spear_smi.c:566:13: expected void *src drivers/mtd/devices/spear_smi.c:566:13: got void [noderef] <asn:2>* drivers/mtd/devices/spear_smi.c:586:9: warning: incorrect type in argument 2 (different address spaces) drivers/mtd/devices/spear_smi.c:586:9: expected void const volatile [noderef] <asn:2>*<noident> drivers/mtd/devices/spear_smi.c:586:9: got unsigned char [usertype] *<noident> drivers/mtd/devices/spear_smi.c:659:14: warning: incorrect type in assignment (different address spaces) drivers/mtd/devices/spear_smi.c:659:14: expected void *dest drivers/mtd/devices/spear_smi.c:659:14: got void [noderef] <asn:2>* drivers/mtd/devices/spear_smi.c:620:9: warning: incorrect type in argument 1 (different address spaces) drivers/mtd/devices/spear_smi.c:620:9: expected void volatile [noderef] <asn:2>*<noident> drivers/mtd/devices/spear_smi.c:620:9: got void *dest drivers/mtd/devices/spear_smi.c:620:9: warning: incorrect type in argument 1 (different address spaces) drivers/mtd/devices/spear_smi.c:620:9: expected void volatile [noderef] <asn:2>*<noident> drivers/mtd/devices/spear_smi.c:620:9: got void *dest drivers/mtd/devices/spear_smi.c:620:9: warning: incorrect type in argument 1 (different address spaces) drivers/mtd/devices/spear_smi.c:620:9: expected void volatile [noderef] <asn:2>*<noident> drivers/mtd/devices/spear_smi.c:620:9: got void *dest Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: r852: Staticize local symbolsJingoo Han
These local symbols are used only in this file. Fix the following sparse warnings: drivers/mtd/nand/r852.c:232:6: warning: symbol 'r852_write_buf' was not declared. Should it be static? drivers/mtd/nand/r852.c:264:6: warning: symbol 'r852_read_buf' was not declared. Should it be static? drivers/mtd/nand/r852.c:315:6: warning: symbol 'r852_cmdctl' was not declared. Should it be static? drivers/mtd/nand/r852.c:360:5: warning: symbol 'r852_wait' was not declared. Should it be static? drivers/mtd/nand/r852.c:389:5: warning: symbol 'r852_ready' was not declared. Should it be static? drivers/mtd/nand/r852.c:400:6: warning: symbol 'r852_ecc_hwctl' was not declared. Should it be static? drivers/mtd/nand/r852.c:432:5: warning: symbol 'r852_ecc_calculate' was not declared. Should it be static? drivers/mtd/nand/r852.c:464:5: warning: symbol 'r852_ecc_correct' was not declared. Should it be static? drivers/mtd/nand/r852.c:532:6: warning: symbol 'r852_engine_enable' was not declared. Should it be static? drivers/mtd/nand/r852.c:550:6: warning: symbol 'r852_engine_disable' was not declared. Should it be static? drivers/mtd/nand/r852.c:560:6: warning: symbol 'r852_card_update_present' was not declared. Should it be static? drivers/mtd/nand/r852.c:575:6: warning: symbol 'r852_update_card_detect' was not declared. Should it be static? drivers/mtd/nand/r852.c:589:9: warning: symbol 'r852_media_type_show' was not declared. Should it be static? drivers/mtd/nand/r852.c:600:1: warning: symbol 'dev_attr_media_type' was not declared. Should it be static? drivers/mtd/nand/r852.c:604:6: warning: symbol 'r852_update_media_status' was not declared. Should it be static? drivers/mtd/nand/r852.c:633:5: warning: symbol 'r852_register_nand_device' was not declared. Should it be static? drivers/mtd/nand/r852.c:671:6: warning: symbol 'r852_unregister_nand_device' was not declared. Should it be static? drivers/mtd/nand/r852.c:685:6: warning: symbol 'r852_card_detect_work' was not declared. Should it be static? drivers/mtd/nand/r852.c:824:6: warning: symbol 'r852_probe' was not declared. Should it be static? drivers/mtd/nand/r852.c:964:6: warning: symbol 'r852_remove' was not declared. Should it be static? drivers/mtd/nand/r852.c:995:6: warning: symbol 'r852_shutdown' was not declared. Should it be static? Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nandsim: Staticize local symbolsJingoo Han
These local symbols are used only in this file. Fix the following sparse warnings: drivers/mtd/nand/nandsim.c:1436:5: warning: symbol 'do_read_error' was not declared. Should it be static? drivers/mtd/nand/nandsim.c:1448:6: warning: symbol 'do_bit_flips' was not declared. Should it be static? Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: impa7: add missing __iomem annotationJingoo Han
Added missing __iomem annotation and used NULL instead of 0 in order to fix the following sparse warnings: drivers/mtd/maps/impa7.c:82:32: warning: Using plain integer as NULL pointer drivers/mtd/maps/impa7.c:96:34: warning: cast removes address space of expression drivers/mtd/maps/impa7.c:96:34: warning: incorrect type in argument 1 (different address spaces) drivers/mtd/maps/impa7.c:96:34: expected void volatile [noderef] <asn:2>*addr drivers/mtd/maps/impa7.c:96:34: got void *<noident> drivers/mtd/maps/impa7.c:108:34: warning: cast removes address space of expression drivers/mtd/maps/impa7.c:108:34: warning: incorrect type in argument 1 (different address spaces) drivers/mtd/maps/impa7.c:108:34: expected void volatile [noderef] <asn:2>*addr drivers/mtd/maps/impa7.c:108:34: got void *<noident> drivers/mtd/maps/impa7.c:109:45: warning: Using plain integer as NULL pointer Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: sm_ftl: Staticize local symbolsJingoo Han
These local symbols are used only in this file. Fix the following sparse warnings: drivers/mtd/sm_ftl.c:25:25: warning: symbol 'cache_flush_workqueue' was not declared. Should it be static? drivers/mtd/sm_ftl.c:44:9: warning: symbol 'sm_attr_show' was not declared. Should it be static? drivers/mtd/sm_ftl.c:57:24: warning: symbol 'sm_create_sysfs_attributes' was not declared. Should it be static? drivers/mtd/sm_ftl.c:110:6: warning: symbol 'sm_delete_sysfs_attributes' was not declared. Should it be static? drivers/mtd/sm_ftl.c:574:5: warning: symbol 'sm_get_media_info' was not declared. Should it be static? drivers/mtd/sm_ftl.c:881:17: warning: symbol 'sm_get_zone' was not declared. Should it be static? drivers/mtd/sm_ftl.c:902:6: warning: symbol 'sm_cache_init' was not declared. Should it be static? drivers/mtd/sm_ftl.c:912:6: warning: symbol 'sm_cache_put' was not declared. Should it be static? drivers/mtd/sm_ftl.c:920:5: warning: symbol 'sm_cache_get' was not declared. Should it be static? drivers/mtd/sm_ftl.c:931:5: warning: symbol 'sm_cache_flush' was not declared. Should it be static? Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: m25p80: add support for mr25h10Markus Niebel
This adds support for the Everspin mr25h10 MRAM chip to the m25p80 driver. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: m25p80: make CONFIG_M25PXX_USE_FAST_READ safe to enableSascha Hauer
This patch adds a flag to struct flash_info indicating that fast_read is not supported. This now gives the following logic when determing whether to enable fastread: If the flash chip does not support fast_read, then disable it. Otherwise: 1) enable fast_read if device node contains m25p,fast-read 2) enable fast_read if forced in Kconfig This makes enabling CONFIG_M25PXX_USE_FAST_READ a safe option since we no longer enable the fast_read option unconditionally. For now fast_read is disabled for the everspin mr25h256 and the catalyst devices. Others may need the flag aswell. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: m25p80: Pass flags through CAT25_INFO macroSascha Hauer
The flags may have to be overwritten, so add them to the CAT25_INFO macro. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: m25p80: remove unnecessary ifdefSascha Hauer
of_property_read_bool properly compiles away, no need to ifdef this for non DT builds. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: MTD_NAND_DENALI should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: drivers/built-in.o: In function `denali_remove': drivers/mtd/nand/denali.c:1605: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `denali_read_page_raw': drivers/mtd/nand/denali.c:1190: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `denali_read_page': drivers/mtd/nand/denali.c:1140: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `write_page': drivers/mtd/nand/denali.c:1051: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `denali_init': drivers/mtd/nand/denali.c:1433: undefined reference to `dma_set_mask' drivers/mtd/nand/denali.c:1438: undefined reference to `dma_map_single' drivers/mtd/nand/denali.c:1442: undefined reference to `dma_mapping_error' Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: fsmc_nand: simplify platform_get_resource_byname/devm_ioremap_resourceJulia Lawall
Remove unneeded error handling on the result of a call to platform_get_resource_byname when the value is passed to devm_ioremap_resource. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression pdev,res,e,e1; expression ret != 0; identifier l; @@ res = platform_get_resource_byname(...); - if (res == NULL) { ... \(goto l;\|return ret;\) } e = devm_ioremap_resource(e1, res); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: atmel_nand: pmecc: fix failure to correct bit error in 1024-bytes sectorJosh Wu
The PMECC use BCH algorithm to correct error. In BCH algorithm, the primitive polynomial value is GF(2^13) for 512-bytes sector size. And it is GF(2^14) for 1024-bytes sector size. This patch will choose correct degree of the remainders (13 or 14) for different sector size. Tested in AT91SAM9X5-EK with MLC nand flash. More detail can be found in §5.4.1 of: AT91SAM ARM-based Embedded MPU Application Note <http://www.atmel.com/Images/doc11127.pdf> Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: m25p80: Micron SPI uses Macronix-style 4-byte addressingBrian Norris
For SPI NOR flash that are larger than 128Mbit (16MiB), we need 4 bytes of address space to reach the entire flash; however, the original SPI flash protocol used only 3 bytes for the address. So far, the practice for handling this has been either to use new command opcodes that are defined to use 4 bytes for their address, or to use special mode-switching command to configure all traditionally-3-byte-address commands to take 4 bytes instead. Macronix and Spansion developed two incompatible methods for entering/exiting "4-byte address mode." Micron flash uses the Macronix method (OPCODE_{EN4B,EX4B}), not the Spansion method. This patch solves addressing issues on Micron n25q256a and provides the ability to support other future Micron SPI flash >16MiB. Quoting a Micron representative: "Majority of our NOR that needs 4-byte addressing (256Mb or 32MB and higher) enter and exit 4byte through B7h and E9h commands. The N25Q256A7xxx and N25Q512A7xxx parts do not support 4-byte addressing mode via B7h or E9h command." They further clarified that those that don't support the enter/exit opcodes (B7h/E9h) are manufactured specifically to come up by default in 4-byte mode. We don't need to treat those parts any diffently, as they will discard the EN4B opcode as a no-op. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: fixup kerneldoc, rename parameterBrian Norris
First, the function argument is 'offset' not 'column'. Second, the 'data_buf' name is inconsistent with the rest of this file. Just use 'buf'. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Gupta, Pekon <pekon@ti.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: gpmi: remove the nand_scan()Huang Shijie
In order to make the nand_scan() work, the current code uses the hack code to init the @nand_chip->ecc.size and the @nand_chip->ecc.strength. and re-init some the ECC info in the gpmi_pre_bbt_scan(). This code is really a little ugly. The patch does following changes: (1) Use the nand_scan_ident()/nand_scan_tail() to replace the nand_scan(). (2) Init all the necessary values in the gpmi_init_last() before we call the nand_scan_tail(). (3) remove the code setting the ECC info, let the mtd layer to do the real job. (4) remove the gpmi_scan_bbt(). we do not need this function any more. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: set ONFI nand's default hooks in nand_set_defaults()Huang Shijie
We may do some ONFI get/set features operations before we call the nand_scan_tail(). So move the default ONFI nand hooks into nand_set_defaults(). Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: set the ecc step size for master/slave mtd_infoHuang Shijie
Set the ecc step size for master/slave mtd_info{}. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: add a new sys node to show the ecc step sizeHuang Shijie
Add a new sys node to show the ecc step size. The application then can uses this node to get the ecc step size. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: silence some shift wrap warningsDan Carpenter
There are static checkers which complain when we declare variables as 64 bit bitfields but only use the lower 32 bits because of shift wrapping. In this case "len" is declared as u64 as opposed to unsigned long or something which might be 32 bits. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: simplify use of devm_ioremap_resourceJulia Lawall
Remove unneeded error handling on the result of a call to platform_get_resource when the value is passed to devm_ioremap_resource. Move the call to platform_get_resource adjacent to the call to devm_ioremap_resource to make the connection between them more clear. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression pdev,res,n,e,e1; expression ret != 0; identifier l; @@ - res = platform_get_resource(pdev, IORESOURCE_MEM, n); ... when != res - if (res == NULL) { ... \(goto l;\|return ret;\) } ... when != res + res = platform_get_resource(pdev, IORESOURCE_MEM, n); e = devm_ioremap_resource(e1, res); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: create_freezable_workqueue() doesn't return an ERR_PTRDan Carpenter
The create_freezable_workqueue() returns a NULL on error, it doesn't return an ERR_PTR. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: tests: incorporate error message for mtdtest_write()Akinobu Mita
All callers of mtdtest_write() print the same error message on failure. This incorporates the error message to mtdtest_write() and removes them from the callers. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: tests: incorporate error message for mtdtest_read()Akinobu Mita
All callers of mtdtest_read() print the same error message on failure. This incorporates the error message to mtdtest_read() and removes them from the callers. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: Allow to build pxa3xx_nand on Orion platformsEzequiel Garcia
The Armada 370 and Armada XP SoC families, selected by PLAT_ORION, have a Nand Flash Controller (NFC) IP very similar to the one present in PXA platforms. Therefore, we want to build this driver on PLAT_ORION. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: pxa3xx: Allow devices with no dma resourcesEzequiel Garcia
When use_dma=0 there's no point in requesting resources for dma, since they won't be used anyway. Therefore we remove that requirement, therefore allowing devices without dma to pass the driver probe. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: pxa3xx: Add __maybe_unused keyword to enable_int()Ezequiel Garcia
Now that we have added ARCH_HAS_DMA conditional the function enable_int() may be unused. Declare it as __maybe_unused, in order to remove the following warning, when the function is not used: drivers/mtd/nand//pxa3xx_nand.c:343:24: warning: 'enable_int' defined but not used [-Wunused-function] Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: pxa3xx: Make dma code dependent on dma capable platformsEzequiel Garcia
This patch adds a macro ARCH_HAS_DMA to compile-out arch specific dma code, namely pxa_request_dma() and pxa_free_dma(). These symbols are available only in pxa, which makes impossible to build the driver in other platforms than ARCH_PXA. In order to handle non-dma capable platforms, we implement a fallbacks that allocate buffers as if 'use_dma=false', putting the dma related code under the ARCH_HAS_DMA conditional. Please note that the correct way to handle this is to migrate the dma code to use of the mmp_pdma dmaengine driver. However, currently this is not possible because the two dmaengine drivers can't work together. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: pxa3xx: Move cached registers to info structureEzequiel Garcia
This registers are not per-chip (aka host) but controller-wide, so it's better to store them in the global 'info' structure. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: pxa3xx: Remove unneeded internal cmdsetEzequiel Garcia
Use the defined macros for NAND command instead of using a constant internal structure. This commit is only a cleanup, there's no functionality modification. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: pxa3xx: Remove hardcoded mtd nameEzequiel Garcia
There's no advantage in using a hardcoded name for the mtd device. Instead use the provided by the platform_device. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: pxa3xx: Add a local loop variableEzequiel Garcia
This is just a cosmetic change, to make the code more readable. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: pxa3xx: Use 'length override' in ONFI paramater page readEzequiel Garcia
The ONFI command 'parameter page read' needs a non-standard length. Therefore, we enable the 'length override' field in NDCB0 and set a non-zero 'length count' in NDCB3. Additionally, the 'spare enable' bit must be disabled for any command that sets a non-zero 'length count' in NDCB3. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: pxa3xx: Support command buffer #3Ezequiel Garcia
Some newer controllers support a fourth command buffer. This additional command buffer allows to set an arbitrary length count, using the NDCB3.NDLENCNT field, to perform non-standard length operations such as the ONFI parameter page read. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: pxa3xx: Allow to set/clear the 'spare enable' fieldEzequiel Garcia
Some commands (such as the ONFI parameter page read) need to clear the 'spare enable' bit. This commit allows to set/clear depending on the prepared command, instead of having it always set. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: nand: pxa3xx: Handle ECC and DMA enable/disable properlyEzequiel Garcia
When ECC is not selected, the ECC enable bit must be cleared in the NAND control register. Same applies to DMA. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 23:47:56 +0000