aboutsummaryrefslogtreecommitdiffstats
AgeCommit message (Collapse)AuthorFilesLines
2015-10-13mtd: spi-nor: refactor block protection functionsBrian Norris1-45/+126
This code was a bit sloppy, would produce a lot of copy-and-paste, and did not always provide a sensible interface: * It didn't validate the length for LOCK and the offset for UNLOCK, so we were essentially discarding half of the user-supplied data and assuming what they wanted to lock/unlock * It didn't do very good error checking * It didn't make use of the fact that this operation works on power-of-two dimensions So, rewrite this to do proper bit arithmetic rather than a bunch of hard-coded condition tables. Now we have: * More comments on how this was derived * Notes on what is (and isn't) supported * A more exendible function, so we could add support for other protection ranges * More accurate locking - e.g., suppose the top quadrant is locked (75% to 100%); then in the following cases, case (a) will succeed but (b) will not (return -EINVAL): (a) user requests lock 3rd quadrant (50% to 75%) (b) user requests lock 3rd quadrant, minus a few blocks (e.g., 50% to 73%) Case (b) *should* fail, since we'd have to lock blocks that weren't requested. But the old implementation didn't know the difference and would lock the entire second half (50% to 100%) This refactoring work will also help enable the addition of mtd_is_locked() support and potentially the support of bottom boot protection (TB=1). Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: spi-nor: fixup kernel-doc for flash lock/unlock function pointersBrian Norris1-2/+2
I got the names of these fields wrong. Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: spi-nor: use SNOR_MFR_* instead of CFI_MFR_*Brian Norris1-12/+11
No functional change, just cosmetic. Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: spi-nor: add SPI NOR manufacturer IDsBrian Norris1-0/+15
These are often similar for CFI (parallel NOR) and for SPI NOR, but they aren't always the same, for various reasons (different namespaces, company acquisitions and renames, etc.). And some don't have CFI_MFR_* entries at all. So let's make a proper place to list the SPI NOR IDs, with all the SPI NOR specific assumptions and comments. Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: spi-nor: make bitfield constants more consistentBrian Norris1-10/+10
These status bits use different ways of representing similar integer constants -- some are decimal, some are hex. Make them more consistent. At the same time, impose my own preference, since IMO it's clearer what these are when using the BIT() macro. Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: spi-nor: make implicit <linux/bitops.h> dependency explicitBrian Norris1-0/+2
We use BIT() in the header. No real problem for now, but it's better to be accurate. Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: spi-nor: Add support for s25fl004kSean Nyekjaer1-0/+1
Signed-off-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: spi-nor: s25fl204k supports dual I/0Sean Nyekjaer1-1/+1
Signed-off-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: pass page number to ecc->write_xxx() methodsBoris BREZILLON20-42/+66
The ->read_xxx() methods are all passed the page number the NAND controller is supposed to read, but ->write_xxx() do not have such a parameter. This is a problem if we want to properly implement data scrambling/randomization in order to mitigate MLC sensibility to repeated pattern: to prevent bitflips in adjacent pages in the same block we need to avoid repeating the same pattern at the same offset in those pages, hence the randomizer/scrambler engine need to be passed the page value in order to adapt its seed accordingly. Moreover, adding the page parameter to the ->write_xxx() methods add some consistency to the current API. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> CC: Josh Wu <josh.wu@atmel.com> CC: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> CC: Maxime Ripard <maxime.ripard@free-electrons.com> CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org> CC: Huang Shijie <shijie.huang@arm.com> CC: Stefan Agner <stefan@agner.ch> CC: devel@driverdev.osuosl.org CC: linux-arm-kernel@lists.infradead.org CC: linux-kernel@vger.kernel.org Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: txx9ndfmc: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: jz4740_nand: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: fsl_upm: show parent device in sysfsFrans Klaver1-1/+1
Fix a bug where parent device symlinks aren't shown in sysfs. While at it, make use of the default owner set by mtdcore. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: socrates_nand: drop owner assignmentFrans Klaver1-1/+0
Owner is automatically set by mtdcore. Make use of that. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: fsl_elbc_nand: show parent device in sysfsFrans Klaver1-1/+1
Fix a bug where mtd 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>
2015-10-13mtd: nand: pxa3xx_nand: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: gpio: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13staging: mt29f_spinand: show parent device in sysfsFrans Klaver1-2/+1
Fix a bug where mtd parent device symlinks aren't shown in sysfs. While at it, take advantage of the default owner and name values set by mtdcore. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: onenand: omap2: drop owner and name assignmentFrans Klaver1-2/+0
Owner and name are automatically set by mtdcore. Make use of that. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: s3c2410: show parent device in sysfsFrans Klaver1-1/+1
Fix a bug where parent device symlinks aren't shown in sysfs. While at it, make use of the default owner set by mtdcore. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: sharpsl: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: omap2: show parent device structure in sysfsFrans Klaver1-2/+1
Make sure the device structure is properly shown in sysfs by properly filling in dev.parent. While at it, make use of the default owner and name values set by mtdcore. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: onenand: samsung: drop owner assignmentFrans Klaver1-1/+0
Owner is automatically set by mtdcore. Make use of that. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: lpc32xx_mlc: drop owner assignmentFrans Klaver1-1/+0
Owner is automatically set by mtdcore. Make use of that. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: ndfc: show parent device in sysfsFrans Klaver1-1/+1
Fix a bug where parent device symlinks aren't shown in sysfs. While at it, make use of the default owner set by mtdcore. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: pasemi_nand: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: mxc_nand: drop owner assignmentFrans Klaver1-1/+0
Owner is automatically set by mtdcore. Make use of that. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: onenand: generic: show parent device in sysfsFrans Klaver1-2/+1
Fix a bug where mtd parent device symlinks aren't shown in sysfs. While at it, take advantage of the default owner and name values set by mtdcore. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: tmio_nand: show parent device in sysfsFrans Klaver1-0/+1
Fix a bug where parent device symlinks aren't shown in sysfs. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: sunxi_nand: drop owner assignmentFrans Klaver1-1/+0
Owner is automatically set by mtdcore. Make use of that. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: sh_flctl: show parent device in sysfsFrans Klaver1-0/+1
Fix a bug where parent device symlinks aren't shown in sysfs. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: r852: drop owner assignmentFrans Klaver1-1/+0
Owner is automatically set by mtdcore. Make use of that. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: plat_nand: show parent device in sysfsFrans Klaver1-2/+1
Fix a bug where parent device symlinks aren't shown in sysfs. While at it, make use of the default owner and name set by mtdcore. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: orion_nand: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: nuc900_nand: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: mpc5121_nfc: show parent device in sysfsFrans Klaver1-0/+1
Fix a bug where parent device symlinks aren't shown in sysfs. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: hisi504_nand: drop owner assignmentFrans Klaver1-1/+0
Owner is automatically set by mtdcore. Make use of that. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: gpmi-nand: show parent device in sysfsFrans Klaver1-1/+1
Fix a bug where parent device symlinks aren't shown in sysfs. While at it, make use of the default owner set by mtdcore. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: fsmc_nand: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: fsl_ifc_nand: show parent device in sysfsFrans Klaver1-1/+1
Fix a bug where parent device symlinks aren't shown in sysfs. While at it, make use of the default owner set by mtdcore. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: docg4: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: denali: drop owner assignmentFrans Klaver1-1/+0
Owner is automatically set by mtdcore. Make use of that. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: davinci_nand: drop owner and name assignmentFrans Klaver1-3/+0
Owner and name are automatically set by mtdcore. Make use of that. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: cafe_nand: drop owner assignmentFrans Klaver1-1/+0
Owner is automatically set by mtdcore. Make use of that. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: nand: bf5xx_nand: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: bcm47xxnflash: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: au1550nd: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: nand: atmel_nand: show parent device in sysfsFrans Klaver1-1/+1
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>
2015-10-13mtd: maps: sa1100-flash: show parent device in sysfsFrans Klaver1-1/+1
Fix a bug where mtd parent device symlinks aren't shown in sysfs. While at it, make use of the default owner value set by mtdcore. Incidentally, it seems the owner field in the concatenated mtds is not actually used, so this shouldn't make much of a difference anyway. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-10-13mtd: maps: rbtx4939-flash: show parent device in sysfsFrans Klaver1-1/+1
Fix a bug where mtd 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>
2015-10-13mtd: maps: pxa2xx-flash: show parent device in sysfsFrans Klaver1-1/+1
Fix a bug where mtd 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>
Copyright © 1996 – 2026 Jason A. Donenfeld. All Rights Reverse Engineered.