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* | Merge branch 'platform/remove_owner' of ↵Greg Kroah-Hartman2014-11-044-4/+0Star
|\ \ | |/ |/| | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next Remove all .owner fields from platform drivers
| * mtd: devices: drop owner assignment from platform_driversWolfram Sang2014-10-204-4/+0Star
| | | | | | | | | | | | | | 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>
* | mtd: m25p80,spi-nor: Fix module aliases for m25p80Ben Hutchings2014-10-211-1/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | m25p80's device ID table is now spi_nor_ids, defined in spi-nor. The MODULE_DEVICE_TABLE() macro doesn't work with extern definitions, but its use was also removed at the same time. Now if m25p80 is built as a module it doesn't get the necessary aliases to be loaded automatically. A clean solution to this will involve defining the list of device IDs in spi-nor.h and removing struct spi_device_id from the spi-nor API, but this is quite a large change. As a quick fix suitable for stable, copy the device IDs back into m25p80. Fixes: 03e296f613af ("mtd: m25p80: use the SPI nor framework") Cc: <stable@vger.kernel.org> # 3.16.x: 32f1b7c8352f: mtd: move support for struct flash_platform_data into m25p80 Cc: <stable@vger.kernel.org> # 3.16.x: 90e55b3812a1: mtd: m25p80: get rid of spi_get_device_id Cc: <stable@vger.kernel.org> # 3.16.x: 70f3ce0510af: mtd: spi-nor: make spi_nor_scan() take a chip type name, not spi_device_id Cc: <stable@vger.kernel.org> # 3.16.x Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | mtd: spi-nor: make spi_nor_scan() take a chip type name, not spi_device_idBen Hutchings2014-10-171-3/+1Star
| | | | | | | | | | | | | | | | | | | | Drivers currently call spi_nor_match_id() and then spi_nor_scan(). This adds a dependency on struct spi_device_id which we want to avoid. Make spi_nor_scan() do it for them. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | mtd: m25p80: get rid of spi_get_device_idRafał Miłecki2014-10-171-5/+5
|/ | | | | | | | This simplifies the way we use spi_nor framework and will allow us to drop spi_nor_match_id. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: move support for struct flash_platform_data into m25p80Rafał Miłecki2014-09-291-2/+20
| | | | | | | | | | | This "type" seems to be an extra hint for m25p80 about the flash. Some archs register flash_platform_data with "name" set to "m25p80" and then with a real flash name set in "type". It seems to be a trick specific to the m25p80 so let's move it out of spi-nor. Btw switch to the spi_nor_match_id instead of iterating spi_nor_ids. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: nand: Move ELM driver and rename as omap_elmEzequiel García2014-09-222-580/+0Star
| | | | | | | | | | | The ELM driver is only used by the OMAP NAND driver, so let's move it to the nand/ directory. Additionally, let's rename it to a less confusing name, so the module is built with a meaningful name, instead of the previous 'elm.ko'. Acked-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: Fixed checkpatch seq_printf warningsSamarth Parikh2014-08-191-13/+13
| | | | | | | | | | | | | | | | | | | | | Fixed checkpatch warnings: "WARNING: Prefer seq_puts to seq_printf" This patch is created with reference to the ongoing lkml thread https://lkml.org/lkml/2014/7/15/646 where Andrew Morton wrote: " - puts is presumably faster - puts doesn't go rogue if you accidentally pass it a "%". - this patch would actually make compiled object files few bytes smaller. Perhaps because seq_printf() is a varargs function, forcing the caller to pass args on the stack instead of in registers. " Signed-off-by: Samarth Parikh <samarthp@ymail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* Merge tag 'v3.16-rc6' into MTD development branchBrian Norris2014-07-211-0/+2
|\ | | | | | | Linux 3.16-rc6
| * mtd: devices: elm: fix elm_context_save() and elm_context_restore() functionsTed Juan2014-07-061-0/+2
| | | | | | | | | | | | | | | | | | | | These two function's switch case lack the 'break' that make them always return error. Signed-off-by: Ted Juan <ted.juan@gmail.com> Acked-by: Pekon Gupta <pekon@ti.com> Cc: <stable@vger.kernel.org> # 3.12.x+ Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | mtd: phram: Fix whitespace issuesRob Ward2014-07-141-1/+2
| | | | | | | | | | | | | | | | | | Fix various whitespace issues. No functional changes. Signed-off-by: Rob Ward <robert.ward114@googlemail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | mtd: phram: replace kmalloc/strcpy by kstrdupFabian Frederick2014-07-061-3/+1Star
|/ | | | | | Cc: Joern Engel <joern@lazybastard.org> Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* Merge tag 'modules-next-for-linus' of ↵Linus Torvalds2014-06-121-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module updates from Rusty Russell: "Most of this is cleaning up various driver sysfs permissions so we can re-add the perm check (we unified the module param and sysfs checks, but the module ones were stronger so we weakened them temporarily). Param parsing gets documented, and also "--" now forces args to be handed to init (and ignored by the kernel). Module NX/RO protections get tightened: we now set them before calling parse_args()" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: module: set nx before marking module MODULE_STATE_COMING. samples/kobject/: avoid world-writable sysfs files. drivers/hid/hid-picolcd_fb: avoid world-writable sysfs files. drivers/staging/speakup/: avoid world-writable sysfs files. drivers/regulator/virtual: avoid world-writable sysfs files. drivers/scsi/pm8001/pm8001_ctl.c: avoid world-writable sysfs files. drivers/hid/hid-lg4ff.c: avoid world-writable sysfs files. drivers/video/fbdev/sm501fb.c: avoid world-writable sysfs files. drivers/mtd/devices/docg3.c: avoid world-writable sysfs files. speakup: fix incorrect perms on speakup_acntsa.c cpumask.h: silence warning with -Wsign-compare Documentation: Update kernel-parameters.tx param: hand arguments after -- straight to init modpost: Fix resource leak in read_dump()
| * drivers/mtd/devices/docg3.c: avoid world-writable sysfs files.Rusty Russell2014-05-141-2/+2
| | | | | | | | | | | | | | | | In line with practice for module parameters, we're adding a build-time check that sysfs files aren't world-writable. Cc: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | Merge tag 'for-linus-20140610' of git://git.infradead.org/linux-mtdLinus Torvalds2014-06-116-1419/+316Star
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MTD updates from Brian Norris: - refactor m25p80.c driver for use as a general SPI NOR framework for other drivers which may speak to SPI NOR flash without providing full SPI support (i.e., not part of drivers/spi/) - new Freescale QuadSPI driver (utilizing new SPI NOR framework) - updates for the STMicro "FSM" SPI NOR driver - fix sync/flush behavior on mtd_blkdevs - fixup subpage write support on a few NAND drivers - correct the MTD OOB test for odd-sized OOB areas - add BCH-16 support for OMAP NAND - fix warnings and trivial refactoring - utilize new ECC DT bindings in pxa3xx NAND driver - new LPDDR NVM driver - address a few assorted bugs caught by Coverity - add new imx6sx support for GPMI NAND - use a bounce buffer for NAND when non-DMA-able buffers are used * tag 'for-linus-20140610' of git://git.infradead.org/linux-mtd: (77 commits) mtd: gpmi: add gpmi support for imx6sx mtd: maps: remove check for CONFIG_MTD_SUPERH_RESERVE mtd: bf5xx_nand: use the managed version of kzalloc mtd: pxa3xx_nand: make the driver work on big-endian systems mtd: nand: omap: fix omap_calculate_ecc_bch() for-loop error mtd: nand: r852: correct write_buf loop bounds mtd: nand_bbt: handle error case for nand_create_badblock_pattern() mtd: nand_bbt: remove unused variable mtd: maps: sc520cdp: fix warnings mtd: slram: fix unused variable warning mtd: pfow: remove unused variable mtd: lpddr: fix Kconfig dependency, for I/O accessors mtd: nand: pxa3xx: Add supported ECC strength and step size to the DT binding mtd: nand: pxa3xx: Use ECC strength and step size devicetree binding mtd: nand: pxa3xx: Clean pxa_ecc_init() error handling mtd: nand: Warn the user if the selected ECC strength is too weak mtd: nand: omap: Documentation: How to select correct ECC scheme for your device ? mtd: nand: omap: add support for BCH16_ECC - NAND driver updates mtd: nand: omap: add support for BCH16_ECC - ELM driver updates mtd: nand: omap: add support for BCH16_ECC - GPMC driver updates ...
| * mtd: slram: fix unused variable warningBrian Norris2014-05-281-3/+1Star
| | | | | | | | | | | | | | drivers/mtd/devices/slram.c: In function 'init_slram': drivers/mtd/devices/slram.c:283:6: warning: variable 'i' set but not used [-Wunused-but-set-variable] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * mtd: nand: omap: add support for BCH16_ECC - ELM driver updatespekon gupta2014-05-211-0/+36
| | | | | | | | | | | | | | | | | | ELM hardware engine is used to detect ECC errors for BCHx ecc-schemes (like BCH4/BCH8/BCH16). This patch extends configuration of ELM registers for adding support of BCH16_HW ecc-scheme. Signed-off-by: Pekon Gupta <pekon@ti.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * mtd: st_spi_fsm: Make of_device_id array constJingoo Han2014-05-211-1/+1
| | | | | | | | | | | | | | | | Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * mtd: m25p80: Revive dual read supportGeert Uytterhoeven2014-05-121-0/+2
| | | | | | | | | | | | | | | | | | | | Commit 03e296f613affcc2671c1e86d8c25ecad867204e ("mtd: m25p80: use the SPI nor framework") accidentally removed support for Dual SPI read transfers. Add it back. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * mtd: elm: compile suspend/resume only with PM_SLEEPWolfram Sang2014-05-121-0/+2
| | | | | | | | | | | | | | | | | | | | Fixes: drivers/mtd/devices/elm.c:480:12: warning: 'elm_suspend' defined but not used [-Wunused-function] drivers/mtd/devices/elm.c:488:12: warning: 'elm_resume' defined but not used [-Wunused-function] Signed-off-by: Wolfram Sang <wsa@sang-engineering.com> Acked-by: Pekon Gupta <pekon@ti.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * mtd: st_spi_fsm: only build for ARMBrian Norris2014-04-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | COMPILE_TEST allows us to build this driver on other arch'es. But not all arch'es have the right I/O accessors -- particularly, x86 is missing readsl() and writesl(). So just restrict this driver to ARCH_STI. It's still buildable for a multiplatform ARM kernel, so it can get decent compile coverage. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Lee Jones <lee.jones@linaro.org>
| * mtd: st_spi_fsm: correct type issuesBrian Norris2014-04-171-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Compile-testing for a 64-bit arch uncovers several bad casts: In file included from include/linux/linkage.h:4:0, from include/linux/kernel.h:6, from drivers/mtd/devices/st_spi_fsm.c:15: drivers/mtd/devices/st_spi_fsm.c: In function ‘stfsm_read_fifo’: drivers/mtd/devices/st_spi_fsm.c:758:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] BUG_ON((((uint32_t)buf) & 0x3) || (size & 0x3)); ... Use uintptr_t instead of uint32_t, since it's guaranteed to be pointer-sized. We also see this warning, if size_t is not 32 bits wide: In file included from drivers/mtd/devices/st_spi_fsm.c:15:0: drivers/mtd/devices/st_spi_fsm.c: In function ‘stfsm_mtd_write’: include/linux/kernel.h:712:17: warning: comparison of distinct pointer types lacks a cast [enabled by default] (void) (&_min1 == &_min2); \ ^ drivers/mtd/devices/st_spi_fsm.c:1704:11: note: in expansion of macro ‘min’ bytes = min(FLASH_PAGESIZE - page_offs, len); ^ Just use min_t() to force the type conversion, since we don't really want to upgrade 'page_offs' and 'bytes' to size_t; they only should be handling <= 256 byte offsets. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Lee Jones <lee.jones@linaro.org>
| * mtd: st_spi_fsm: begin using spi-nor.h opcodesBrian Norris2014-04-142-24/+5Star
| | | | | | | | | | | | | | | | | | Many of the serial_flash_cmds.h opcodes are duplicated with spi-nor.h. Let's begin to unify them. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Marek Vasut <marex@denx.de>
| * mtd: st_spi_fsm: replace FLACH_CMD_* with SPINOR_OP_*Brian Norris2014-04-142-87/+87
| | | | | | | | | | | | | | | | | | Begin to unify the differences between serial_flash_cmds.h and spi-nor.h. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Marek Vasut <marex@denx.de>
| * mtd: st_spi_fsm: kill duplicate CMD definitionsBrian Norris2014-04-141-36/+0Star
| | | | | | | | | | | | | | | | | | These are also in serial_flash_cmds.h. (FWIW, I didn't know the C preprocessor allowed redefinitions without warning like this.) Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Marek Vasut <marex@denx.de>
| * mtd: st_spi_fsm: fixup Kconfig dependencyBrian Norris2014-04-141-1/+1
| | | | | | | | | | | | | | | | | | | | I hear that this driver should depend on ARCH_STI, and that "SH" is not actually a real symbol. At the same time, let's allow compile-testing on other ARCH'es. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Marek Vasut <marex@denx.de>
| * mtd: spi-nor: shorten Kconfig namingBrian Norris2014-04-141-1/+1
| | | | | | | | | | | | Signed-off-by: Brian Norris <computersforpeace@gmail.com> Reviewed-by: Marek Vasut <marex@denx.de> Acked-by: Huang Shijie <b32955@freescale.com>
| * mtd: spi-nor: re-name OPCODE_* to SPINOR_OP_*Brian Norris2014-04-141-2/+2
| | | | | | | | | | | | | | | | | | Qualify these with a better namespace, and prepare them for use in more drivers. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Reviewed-by: Marek Vasut <marex@denx.de> Acked-by: Huang Shijie <b32955@freescale.com>
| * mtd: st_spi_fsm: Add support for Macronix MX25L3255EAngus Clark2014-04-141-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for the Macronix MX25L3255E device. Unlike the other Macronix devices we have seen, this device supports WRITE_1_4_4 at reasonable frequencies. Rather than masking out WRITE_1_4_4 support altogether, we now rely on the table parameters to indicate whether or not WRITE_1_4_4 should be used. Signed-off-by: Angus Clark <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * mtd: st_spi_fsm: Add Spansion S25FL032P to device tableAngus Clark2014-04-141-0/+2
| | | | | | | | | | | | | | | | Add Spansion S25FL032P to the list of known devices. Signed-off-by: Angus Clark <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * mtd: st_spi_fsm: Refactor status register operationsAngus Clark2014-04-141-84/+68Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch refactors the fsm_read_status() and fsm_write_status() code to support 1 or 2 byte operations, with a specified command. This allows us to remove device/register specific code, such as the N25Q fsm_wrvcr() function. The 'QE' configuration code is updated accordingly, with minor tweaks to ensure the register values are only written if actually required. One notable change in this area is that the 'W25Q_STATUS_QE' bit-field is now defined with respect to the 'SR2' register, rather than the combined 'SR1+SR2' register which is only used for write operations. Signed-off-by: Angus Clark <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * mtd: st_spi_fsm: Update Macronix 'QE' configurationAngus Clark2014-04-141-4/+19
| | | | | | | | | | | | | | | | | | Update the configuration of the Macronix 'QE' bit, such that we only set or clear the bit if required. Signed-off-by: Angus Clark <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * mtd: st_spi_fsm: Update Macronix 32-bit addressing supportAngus Clark2014-04-141-13/+10Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support for the Macronix 32-bit addressing scheme was originally developed using the MX25L25635E device. As is often the case, it was found that the presence of a "WAIT" instruction was required for the "EN4B/EX4B" FSM Sequence to complete. (It is known that the SPI FSM Controller makes certain undocumented assumptions regarding what constitutes a valid sequence.) However, further testing suggested that a small delay was required after issuing the "EX4B" command; without this delay, data corruptions were observed, consistent with the device not being ready to retrieve data. Although the issue was not fully understood, the workaround of adding a small delay was implemented, while awaiting clarification from Macronix. The same behaviour has now been found with a second Macronix device, the MX25L25655E. However, with this device, it seems that the delay is also required after the 'EN4B' commands. This discovery has prompted us to revisit the issue. Although still not conclusive, further tests have suggested that the issue is down to the SPI FSM Controller, rather than the Macronix devices. Furthermore, an alternative workaround has emerged which is to set the WAIT time to 0x00000001, rather then 0x00000000. (Note, the WAIT instruction is used purely for the purpose of achieving "sequence validity", rather than actually implementing a delay!) The issue is now being investigated by the Design and Validation teams. In the meantime, we implement the alternative workaround, which reduces the effective delay from 1us to 1ns. Signed-off-by: Angus Clark <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * mtd: st_spi_fsm: Add Macronix MX25L25655E deviceAngus Clark2014-04-141-0/+3
| | | | | | | | | | | | | | | | Add Macronix MX25L25655E to the list of known devices. Signed-off-by: Angus Clark <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * mtd: m25p80: use the SPI nor frameworkBrian Norris2014-04-142-1199/+106Star
| | | | | | | | | | | | | | | | | | | | | | | | | | Use the new SPI nor framework, and rewrite the m25p80: (0) remove all the NOR comands. (1) change the m25p->command to an array. (2) implement the necessary hooks, such as m25p80_read/m25p80_write. Tested with the m25p32. Signed-off-by: Huang Shijie <b32955@freescale.com> Acked-by: Marek Vasut <marex@denx.de> [Brian: rebased] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | Shiraz has movedViresh Kumar2014-04-191-2/+2
|/ | | | | | | | | | | | shiraz.hashim@st.com email-id doesn't exist anymore as he has left the company. Replace ST's id with shiraz.linux.kernel@gmail.com. It also updates .mailmap file to fix address for 'git shortlog'. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: Shiraz Hashim <shiraz.linux.kernel@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mtd: devices: elm: update DRIVER_NAME as "omap-elm"Pekon Gupta2014-03-261-1/+3
| | | | | | | | use "omap-elm" as DRIVER_NAME Signed-off-by: Pekon Gupta <pekon@ti.com> Reviewed-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: devices: elm: configure parallel channels based on ecc_stepsPekon Gupta2014-03-261-3/+5
| | | | | | | | | | | | ELM hardware can process up to maximum of 8 hannels in parallel for ECC error detection. Currently the number of channels getting configured for processing is static determined by macro ERROR_VECTOR_MAX. However, the actual number of channels that need to be processed is the ECC step number. This patch just avoids configuring extra unused channels. Signed-off-by: Pekon Gupta <pekon@ti.com> Reviewed-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: devices: elm: clean elm_load_syndromePekon Gupta2014-03-261-7/+11
| | | | | | | | | | This patch refactors elm_load_syndrome() to make it scalable for newer ECC schemes by removing scheme specific macros (like ECC_BYTES*xx), and instead using ECC control information passed during elm_config. Signed-off-by: Pekon Gupta <pekon@ti.com> Reviewed-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: devices: elm: check for hardware engine's design constraintsPekon Gupta2014-03-261-1/+12
| | | | | | | | | | | | | | | | ELM hardware engine is used by BCH ecc-schemes for detecting and locating ECC errors. This patch adds the following checks for ELM hardware engine: - ELM internal buffers are of 1K, so it cannot process data with ecc-step-size > 1K. - ELM engine can execute upto maximum of 8 threads in parallel, so in *page-mode* (when complete page is processed in single iteration), ELM cannot support ecc-steps > 8. Signed-off-by: Pekon Gupta <pekon@ti.com> Reviewed-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: st_spi_fsm: Succinctly reorganise .remove()Lee Jones2014-03-201-6/+1Star
| | | | | | Reported-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: st_spi_fsm: Allow loop to run at least once before giving up CPULee Jones2014-03-201-2/+2
| | | | | | Reported-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: st_spi_fsm: Correct vendor name spelling issue - missing "M"Lee Jones2014-03-201-1/+1
| | | | | | Reported-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: st_spi_fsm: Avoid duplicating MTD core codeLee Jones2014-03-201-8/+0Star
| | | | | | Reported-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: st_spi_fsm: Remove useless consts from function argumentsLee Jones2014-03-201-8/+7Star
| | | | | | | Reported-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> [Brian: tweaked a bit] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: st_spi_fsm: Convert ST SPI FSM (NOR) Flash driver to new DT partitionsLee Jones2014-03-201-1/+5
| | | | | | | | | | | The old API expected a "partitions" property provided a phandle to a separate partitions node, which itself contained yet more nodes each representing one partition. The new API rids the requirement for the superfluous intermediary partitions node. This patch provides the added information required for automatic parsing by the core. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: st_spi_fsm: Move runtime configurable msg sequences into device's structLee Jones2014-03-201-32/+32
| | | | | | | | | | | | | Until now the dynamically configurable message sequences for read, write and enable 32bit addressing have been global. Brian makes a good point why this should not be the case. If there are ever two FSM's located on the same platform, we could be potentially introducing a race condition on "needlessly shared data". Suggested-by: Brian Norris <computersforpeace@gmail.com> Acked-by Angus Clark <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: st_spi_fsm: Supply the W25Qxxx chip specific configuration call-backLee Jones2014-03-201-4/+43
| | | | | | Acked-by Angus Clark <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: st_spi_fsm: Supply the S25FLxxx chip specific configuration call-backLee Jones2014-03-201-6/+260
| | | | | | | | | | | This patch allows us to prepare some of the message sequences which will be required to talk to the S25FLxxx family of Serial Flash devices. It also allows us to do some required extra operations after any busy wait failures. Acked-by Angus Clark <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* mtd: st_spi_fsm: Supply the MX25xxx chip specific configuration call-backLee Jones2014-03-201-1/+81
| | | | | | Acked-by Angus Clark <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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