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* mtd: spi-nor: provide default erase_sector implementationSteffen Trumtrar2019-05-081-4/+33
| | | | | | | | | | | | | | | | | | | | | | | Based on the Linux v4.4 patch commit c67cbb839da9cc2757eabfa128556db6a2baf160 Author: Brian Norris <computersforpeace@gmail.com> AuthorDate: Tue Nov 10 12:15:27 2015 -0800 Commit: Brian Norris <computersforpeace@gmail.com> CommitDate: Thu Nov 19 13:34:44 2015 -0800 mtd: spi-nor: provide default erase_sector implementation Some spi-nor drivers perform sector erase by duplicating their write_reg() command. Let's not require that the driver fill this out, and provide a default instead. Tested on m25p80.c and Medatek's MT8173 SPI NOR flash driver. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: introduce SPI 1-2-2 and SPI 1-4-4 protocolsSteffen Trumtrar2019-05-082-202/+500
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sync the driver with Linux v4.12 and apply the patch commit cfc5604c488ccd17936b69008af0c9ae050f4a08 Author: Cyrille Pitchen <cyrille.pitchen@atmel.com> AuthorDate: Tue Apr 25 22:08:46 2017 +0200 Commit: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr> CommitDate: Mon May 15 21:56:17 2017 +0200 mtd: spi-nor: introduce SPI 1-2-2 and SPI 1-4-4 protocols This patch changes the prototype of spi_nor_scan(): its 3rd parameter is replaced by a 'struct spi_nor_hwcaps' pointer, which tells the spi-nor framework about the actual hardware capabilities supported by the SPI controller and its driver. Besides, this patch also introduces a new 'struct spi_nor_flash_parameter' telling the spi-nor framework about the hardware capabilities supported by the SPI flash memory and the associated settings required to use those hardware caps. Then, to improve the readability of spi_nor_scan(), the discovery of the memory settings and the memory initialization are now split into two dedicated functions. 1 - spi_nor_init_params() The spi_nor_init_params() function is responsible for initializing the 'struct spi_nor_flash_parameter'. Currently this structure is filled with legacy values but further patches will allow to override some parameter values dynamically, for instance by reading the JESD216 Serial Flash Discoverable Parameter (SFDP) tables from the SPI memory. The spi_nor_init_params() function only deals with the hardware capabilities of the SPI flash memory: especially it doesn't care about the hardware capabilities supported by the SPI controller. 2 - spi_nor_setup() The second function is called once the 'struct spi_nor_flash_parameter' has been initialized by spi_nor_init_params(). With both 'struct spi_nor_flash_parameter' and 'struct spi_nor_hwcaps', the new argument of spi_nor_scan(), spi_nor_setup() computes the best match between hardware caps supported by both the (Q)SPI memory and controller hence selecting the relevant settings for (Fast) Read and Page Program operations. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: remove unused write_enable from write_regSteffen Trumtrar2019-05-082-11/+10
| | | | | | | | | | | | | | | | | | | | | | | | Based on the Linux v4.2 commit: commit f9f3ce835ddce3c669eee869253105f88819888b Author: Jagan Teki <jteki@openedev.com> AuthorDate: Wed Aug 19 15:26:44 2015 +0530 Commit: Brian Norris <computersforpeace@gmail.com> CommitDate: Fri Sep 11 16:04:55 2015 -0700 mtd: spi-nor: Zap unneeded write_enable from write_reg The 'write_enable' argument is unused and unneeded, so remove it from the API. Signed-off-by: Jagan Teki <jteki@openedev.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Han Xu <han.xu@freescale.com> [Brian: fixed for nxp-spifi.c] Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* spi: Extend the core to ease integration of SPI memory controllersSteffen Trumtrar2019-05-081-23/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sync with Linux v5.1-rc1. This is the barebox adoption of the commit commit c36ff266dc82f4ae797a6f3513c6ffa344f7f1c7 Author: Boris Brezillon <boris.brezillon@bootlin.com> Date: Thu Apr 26 18:18:14 2018 +0200 spi: Extend the core to ease integration of SPI memory controllers Some controllers are exposing high-level interfaces to access various kind of SPI memories. Unfortunately they do not fit in the current spi_controller model and usually have drivers placed in drivers/mtd/spi-nor which are only supporting SPI NORs and not SPI memories in general. This is an attempt at defining a SPI memory interface which works for all kinds of SPI memories (NORs, NANDs, SRAMs). Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Frieder Schrempf <frieder.schrempf@exceet.de> Tested-by: Frieder Schrempf <frieder.schrempf@exceet.de> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: cadence: add cqspi_set_protocolSteffen Trumtrar2019-05-081-63/+113
| | | | | | | | | | | | | Sync up the driver with the original linux v4.7 driver version. As only Quad-SPI mode is/was supported, the function was not ported in the initial move to barebox. To make future synchronizations with the kernel driver easier, add this function and reorder the functions in the driver accordingly. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: Add support for sst25wf040bYao Yuan2018-12-051-0/+1
| | | | | | | | Signed-off-by: Yuan Yao <yao.yuan@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> [Linux upstream commit: c887be71cc39] Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: Add support for sst25wf020aAlexis Ballier2018-12-051-0/+1
| | | | | | | | | | | | | | It is a 256KiB flash with 4 KiB erase sectors and 64KiB overlay blocks. This is the one available on Hardkernel's Odroid U3 shield. Signed-off-by: Alexis Ballier <aballier@gentoo.org> [Brian: seems like this does NOT require the usual SST_WRITE hacks] Signed-off-by: Brian Norris <computersforpeace@gmail.com> [Linux upstream commit: a1d97ef96e38] Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* drivers: Introduce dev_set_name()Andrey Smirnov2018-10-181-1/+1
| | | | | | | | Introduce dev_set_name() in order to hide implementation details of setting device's name so it'd be easier to change it. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: add manufacturer IDs for ISSI and Winbondmichael grassmann2018-03-221-0/+4
| | | | | | | | | | This patch includes new NOR flash IDs to support flashes from the manufacturers ISSI and Winbond - ISSI IS25LP128-JBLA3 and IS25LP128-JBLE - Winbond W25Q128JVSIM Signed-off-by: michael grassmann <m.grassmann@phytec.de> Signed-off-by: Christian Hemp <c.hemp@phytec.de>
* mtd: spi-nor: add support for w25q16dwMichael Grzeschik2018-03-051-0/+1
| | | | | Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: mx25l3205d/mx25l6405d: append SECT_4KUlrich Ölmann2017-11-281-2/+2
| | | | | | | | | | | | | | | | | | This is a port of Linux kernel commit | commit 0501f2e5ff28a02295e42fc9e7164a20ef4c30d5 | Author: Andreas Fenkart <afenkart@gmail.com> | Date: Thu Nov 5 10:04:23 2015 +0100 | | mtd: spi-nor: mx25l3205d/mx25l6405d: append SECT_4K | | according datasheet both chips can erase 4kByte sectors individually | | Signed-off-by: Andreas Fenkart <andreas.fenkart@dev.digitalstrom.org> | Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: m25p80: make it possible to use 4K erase blockAntony Pavlov2017-10-161-0/+13
| | | | | | | | | | | | | We already have the MTD_SPI_NOR_USE_4K_SECTORS option handling in C code for 4K erase block support. Alas this 4K erase block support code can't be used because the MTD_SPI_NOR_USE_4K_SECTORS option support is missed in Kconfig. This patch imports necessary Kconfig MTD_SPI_NOR_USE_4K_SECTORS option declaration from linux v4.11-rc8. Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: sync definition of Spansion chips from LinuxUwe Kleine-König2017-06-191-10/+12
| | | | | Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: cadence: change devicetree bindings to upstreamSteffen Trumtrar2017-04-191-9/+6
| | | | | | | | | Upstream devicetree bindings where changed to use "cdns,is-decoded-cs" instead of "external-decoder". Use it. Also, get rid of the clock-names "qspi_clk" dependency. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: add support for s25fl208kPeter Mamonov2017-01-301-0/+1
| | | | | Signed-off-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: m25p80: add support for Everspin MR25H40Uwe Kleine-König2017-01-101-0/+1
| | | | | Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: add MX25U2033EAlexander Kurz2016-11-111-0/+1
| | | | | | | This chip can be found in 4th generation Kindle devices Signed-off-by: Alexander Kurz <akurz@blala.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: add new variantsAlexander Kurz2016-08-031-0/+5
| | | | | | | Read access tested on W25Q20BW and MX25U4035. Signed-off-by: Alexander Kurz <akurz@blala.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/mtd'Sascha Hauer2016-03-111-0/+1
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| * mtd: spi-nor: Add support for s25fl116kSascha Hauer2016-02-111-0/+1
| | | | | | | | | | | | | | The Spansion s25fl116k is a 16MBit flash memory. Add the flash info entry for it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | driver: replace dev_request_mem_region with dev_request_mem_resourceSascha Hauer2016-03-071-2/+9
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dev_request_mem_region doesn't work properly one some SoCs on which PTR_ERR() values clash with valid return values from dev_request_mem_region. Replace them with dev_request_mem_resource where possible. This patch has been generated with the following semantic patch: // <smpl> @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) { ... - return PTR_ERR(io); -} + return PTR_ERR(iores); +} +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) - return PTR_ERR(io); -} + return PTR_ERR(iores); +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { - ret = PTR_ERR(io); +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) { + ret = PTR_ERR(iores); ... } +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) + return PTR_ERR(iores); +io = IOMEM(iores->start); ...+> } @@ identifier func; @@ func(...) { <+... struct resource *iores; -struct resource *iores; ...+> } // </smpl> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* spi-nor: Port erase timeout fix from LinuxAndrey Smirnov2016-02-081-3/+34
| | | | | | | | | | | Large SPI-NOR (>2MB) chips reuire more than 40 seconds to perform all-chip erase. This patch adapts 09b6a377687b885565339e60bc62566433a0406f from Linux kernel, which implements simple heuristics in order to calculate appropriate wait time (see orignal commit's description for more details of the fix) Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: add Spansion S25FL204K supportAntony Pavlov2015-09-021-0/+1
| | | | | | | | | | Spansion S25FL204K is a 4-Mbit 3.0V Serial Flash Memory with Uniform 4 kB Sectors. Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Acked-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/mtd'Sascha Hauer2015-09-012-70/+13
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| * mtd: spi-nor: mostly drop lock/unlock codeSascha Hauer2015-08-281-66/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The lock/unlock code is broken beyond repair. First of all the algorithm doesn't work properly. SPI NOR flashes can only protect a certain amount of blocks from the end of the device which is incompatible to the protect(start,len) API we have. The algorithm tries to be clever by doing protection only when it does not protect unrelated blocks and unprotection only when it does not unprotect unrelated blocks. This breaks for example when some code protects the last blocks (which may contain the bootloader), then protects the blocks before the last ones (which may contain the environment). Then if we try to overwrite the bootloader this won't work since it would unprotect the environment aswell, so the driver will not unprotect anything resulting in a failed erase/write later. Then the protection behaviour is different between different flashes. Some have three protection bits, some have four. For some the smallest protection are is 1/16 of the device, others have 1/256 or 1/64. Some have a bit which selects the lower area instead of upper area for protection. The position of this bit differs on different flashes. This patch removes the lock code completely and always unprotects the whole device. This way we can unprotect a device for writing to it and never protect it again. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * mtd: m25p80: make it possible to use large blocks if desiredSascha Hauer2015-08-262-4/+5
| | | | | | | | | | | | | | | | | | | | Some SPI NOR flashes support 4K erase blocks. 4K erase blocks do not work with UBIFS which needs a minimum erase block size of 15360 bytes. Also bigger sectors are faster to erase. This patch adds a device tree option to use the bigger blocks instead of the default 4K blocks. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* | spi-nor: Align spi_nor_ids[] with kernel 4.1Fabio Estevam2015-08-191-7/+12
|/ | | | | | | Sync the spi_nor_ids[] struct with the one from kernel 4.1. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: add cadence quadspi driverSteffen Trumtrar2015-05-293-0/+1221
| | | | | Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: spi-nor: add SPI-NOR frameworkSteffen Trumtrar2015-05-293-0/+1155
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>
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