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2021-03-11spi: cadence: set cqspi to the driver_data field of struct deviceMeng Li1-0/+1
When initialize cadence qspi controller, it is need to set cqspi to the driver_data field of struct device, because it will be used in function cqspi_remove/suspend/resume(). Otherwise, there will be a crash trace as below when invoking these finctions. Fixes: 31fb632b5d43 ("spi: Move cadence-quadspi driver to drivers/spi/") Cc: [email protected] Signed-off-by: Meng Li <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: cadence-quadspi: Silence shiftTooManyBitsSigned warningJay Fang1-1/+1
drivers/spi/spi-cadence-quadspi.c:267:18: warning: Shifting signed 32-bit value by 31 bits is undefined behaviour [shiftTooManyBitsSigned] return reg & (1 << CQSPI_REG_CONFIG_IDLE_LSB); ^ Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> Signed-off-by: Jay Fang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10Merge series "parport: Introduce module_parport_driver() and use it" from ↵Mark Brown2-24/+2
Andy Shevchenko <[email protected]>: Introduce module_parport_driver() and use it. Greg or Mark, since we have this series tagged, can somebody of you pick it up? Changelog v3: - added tag on patch 1 (Sudip) - Cc'ed to Greg Andy Shevchenko (3): parport: Introduce module_parport_driver() helper macro spi: butterfly: Switch to use module_parport_driver() spi: lm70llp: Switch to use module_parport_driver() drivers/spi/spi-butterfly.c | 13 +------------ drivers/spi/spi-lm70llp.c | 13 +------------ include/linux/parport.h | 12 +++++++++++- 3 files changed, 13 insertions(+), 25 deletions(-) base-commit: fe07bfda2fb9cdef8a4d4008a409bb02f35f1bd8 -- 2.30.1
2021-03-10spi: spi-nxp-fspi: Implement errata workaround for LS1028AKuldeep Singh1-6/+73
Errata ERR050568 description says that "Flash access by FlexSPI AHB command may not work with platform frequency equal to 300 MHz" on LS1028A. By default, smaller length reads(equal to RX FIFO size) are done by IP bus and larger length reads using AHB bus. For adding errata workaround, use IP bus to read entire flash contents and disable AHB path when platform frequency is 300Mhz. Signed-off-by: Kuldeep Singh <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: spi-nxp-fspi: Add imx8dxl driver supportHan Xu1-0/+9
Add driver support for imx8dxl which support read through IP bus only and disable AHB bus due to an IC errata. Use the pre-defined quirk FSPI_QUIRK_USE_IP_ONLY directly in device-type data to disable AHB read. Signed-off-by: Han Xu <[email protected]> Signed-off-by: Kuldeep Singh <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: spi-nxp-fspi: Add support for IP read onlyKuldeep Singh1-6/+22
Add support for disabling AHB bus and read entire flash contents via IP bus only. Please note, this enables IP bus read using a quirk which can be enabled directly in device-type data or in existence of an errata where AHB bus may need to be disabled. Signed-off-by: Kuldeep Singh <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: cadence-quadspi: add missing of_node_putJunlin Yang1-1/+5
Fix OF node leaks by calling of_node_put in for_each_available_child_of_node when the cycle returns. Generated by: scripts/coccinelle/iterators/for_each_child.cocci Signed-off-by: Junlin Yang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: atmel: Drop unused variableTudor Ambarus1-4/+0
The DMA cap mask is no longer used since: commit 7758e390699f ("spi: atmel: remove compat for non DT board when requesting dma chan") Drop it now. Signed-off-by: Tudor Ambarus <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: rockchip: avoid objtool warningArnd Bergmann1-3/+10
Building this file with clang leads to a an unreachable code path causing a warning from objtool: drivers/spi/spi-rockchip.o: warning: objtool: rockchip_spi_transfer_one()+0x2e0: sibling call from callable instruction with modified stack frame Change the unreachable() into an error return that can be handled if it ever happens, rather than silently crashing the kernel. Fixes: 65498c6ae241 ("spi: rockchip: support 4bit words") Signed-off-by: Arnd Bergmann <[email protected]> Acked-by: Pratyush Yadav <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: omap2-mcspi: Activate pinctrl idle state during runtime suspendAlexander Sverdlin1-6/+18
Set the (optional) idle pinctrl state during runtime suspend. This is the same schema used in PL022 driver and can help with HW designs sharing the SPI lines for different purposes. Signed-off-by: Alexander Sverdlin <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: lm70llp: Switch to use module_parport_driver()Andy Shevchenko1-12/+1
Switch to use module_parport_driver() to reduce boilerplate code. Signed-off-by: Andy Shevchenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: butterfly: Switch to use module_parport_driver()Andy Shevchenko1-12/+1
Switch to use module_parport_driver() to reduce boilerplate code. Note, device_initcall() is a default for module_init(). Signed-off-by: Andy Shevchenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: ath79: remove spi-master setup and cleanup assignmentDavid Bauer1-2/+0
This removes the assignment of setup and cleanup functions for the ath79 target. Assigning the setup-method will lead to 'setup_transfer' not being assigned in spi_bitbang_init. Because of this, performing any TX/RX operation will lead to a kernel oops. Also drop the redundant cleanup assignment, as it's also assigned in spi_bitbang_init. Signed-off-by: David Bauer <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: ath79: always call chipselect functionDavid Bauer1-0/+1
spi-bitbang has to call the chipselect function on the ath79 SPI driver in order to communicate with the SPI slave device, as the ath79 SPI driver has three dedicated chipselect lines but can also be used with GPIOs for the CS lines. Fixes commit 4a07b8bcd503 ("spi: bitbang: Make chipselect callback optional") Signed-off-by: David Bauer <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: bcm63xx-hsspi: fix pm_runtimeÁlvaro Fernández Rojas1-1/+6
The driver sets auto_runtime_pm to true, but it doesn't call pm_runtime_enable(), which results in "Failed to power device" when PM support is enabled. Signed-off-by: Álvaro Fernández Rojas <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: bcm63xx-spi: fix pm_runtimeÁlvaro Fernández Rojas1-1/+5
The driver sets auto_runtime_pm to true, but it doesn't call pm_runtime_enable(), which results in "Failed to power device" when PM support is enabled. Signed-off-by: Álvaro Fernández Rojas <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-03-10spi: spi-ti-qspi: Free DMA resourcesTudor Ambarus1-6/+14
Release the RX channel and free the dma coherent memory when devm_spi_register_master() fails. Fixes: 5720ec0a6d26 ("spi: spi-ti-qspi: Add DMA support for QSPI mmap read") Cc: [email protected] Signed-off-by: Tudor Ambarus <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-22Merge tag 'powerpc-5.12-1' of ↵Linus Torvalds1-6/+6
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - A large series adding wrappers for our interrupt handlers, so that irq/nmi/user tracking can be isolated in the wrappers rather than spread in each handler. - Conversion of the 32-bit syscall handling into C. - A series from Nick to streamline our TLB flushing when using the Radix MMU. - Switch to using queued spinlocks by default for 64-bit server CPUs. - A rework of our PCI probing so that it happens later in boot, when more generic infrastructure is available. - Two small fixes to allow 32-bit little-endian processes to run on 64-bit kernels. - Other smaller features, fixes & cleanups. Thanks to: Alexey Kardashevskiy, Ananth N Mavinakayanahalli, Aneesh Kumar K.V, Athira Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chengyang Fan, Christophe Leroy, Christopher M. Riedl, Fabiano Rosas, Florian Fainelli, Frederic Barrat, Ganesh Goudar, Hari Bathini, Jiapeng Chong, Joseph J Allen, Kajol Jain, Markus Elfring, Michal Suchanek, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Pingfan Liu, Po-Hsu Lin, Qian Cai, Ram Pai, Randy Dunlap, Sandipan Das, Stephen Rothwell, Tyrel Datwyler, Will Springer, Yury Norov, and Zheng Yongjun. * tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (188 commits) powerpc/perf: Adds support for programming of Thresholding in P10 powerpc/pci: Remove unimplemented prototypes powerpc/uaccess: Merge raw_copy_to_user_allowed() into raw_copy_to_user() powerpc/uaccess: Merge __put_user_size_allowed() into __put_user_size() powerpc/uaccess: get rid of small constant size cases in raw_copy_{to,from}_user() powerpc/64: Fix stack trace not displaying final frame powerpc/time: Remove get_tbl() powerpc/time: Avoid using get_tbl() spi: mpc52xx: Avoid using get_tbl() powerpc/syscall: Avoid storing 'current' in another pointer powerpc/32: Handle bookE debugging in C in syscall entry/exit powerpc/syscall: Do not check unsupported scv vector on PPC32 powerpc/32: Remove the counter in global_dbcr0 powerpc/32: Remove verification of MSR_PR on syscall in the ASM entry powerpc/syscall: implement system call entry/exit logic in C for PPC32 powerpc/32: Always save non volatile GPRs at syscall entry powerpc/syscall: Change condition to check MSR_RI powerpc/syscall: Save r3 in regs->orig_r3 powerpc/syscall: Use is_compat_task() powerpc/syscall: Make interrupt.c buildable on PPC32 ...
2021-02-22Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds1-3/+2
Pull ARM updates from Russell King: - Generalise byte swapping assembly - Update debug addresses for STI - Validate start of physical memory with DTB - Do not clear SCTLR.nTLSMD in decompressor - amba/locomo/sa1111 devices remove method return type is void - address markers for KASAN in page table dump * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9065/1: OABI compat: fix build when EPOLL is not enabled ARM: 9055/1: mailbox: arm_mhuv2: make remove callback return void amba: Make use of bus_type functions amba: Make the remove callback return void vfio: platform: simplify device removal amba: reorder functions amba: Fix resource leak for drivers without .remove ARM: 9054/1: arch/arm/mm/mmu.c: Remove duplicate header ARM: 9053/1: arm/mm/ptdump:Add address markers for KASAN regions ARM: 9051/1: vdso: remove unneded extra-y addition ARM: 9050/1: Kconfig: Select ARCH_HAVE_NMI_SAFE_CMPXCHG where possible ARM: 9049/1: locomo: make locomo bus's remove callback return void ARM: 9048/1: sa1111: make sa1111 bus's remove callback return void ARM: 9047/1: smp: remove unused variable ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores ARM: 9045/1: uncompress: Validate start of physical memory against passed DTB ARM: 9042/1: debug: no uncompress debugging while semihosting ARM: 9041/1: sti LL_UART: add STiH418 SBC UART0 support ARM: 9040/1: use DEBUG_UART_PHYS and DEBUG_UART_VIRT for sti LL_UART ARM: 9039/1: assembler: generalize byte swapping macro into rev_l
2021-02-22Merge tag 'spi-v5.12' of ↵Linus Torvalds32-2434/+2272
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi updates from Mark Brown: "The main focus of this release from a framework point of view has been spi-mem where we've acquired support for a few new hardware features which enable better performance on suitable hardware. Otherwise mostly thanks to Arnd's cleanup efforts on old platforms we've removed several obsolete drivers which just about balance out the newer drivers we've added this cycle. Summary: - Allow drivers to flag if they are unidirectional. - Support for DTR mode and hardware acceleration of dummy cycles in spi-mem. - Support for Allwinder H616, Intel Lightning Mountain, nVidia Tegra QuadSPI, Realtek RTL838x and RTL839x. - Removal of obsolete EFM32, Txx9 and SIRF Prima and Atlas drivers" * tag 'spi-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (76 commits) spi: Skip zero-length transfers in spi_transfer_one_message() spi: dw: Avoid stack content exposure spi: cadence-quadspi: Use spi_mem_dtr_supports_op() spi: spi-mem: add spi_mem_dtr_supports_op() spi: atmel-quadspi: Disable the QSPI IP at suspend() spi: pxa2xx: Add IDs for the controllers found on Intel Lynxpoint spi: pxa2xx: Fix the controller numbering for Wildcat Point spi: Change provied to provided in the file spi.h spi: mediatek: add set_cs_timing support spi: support CS timing for HW & SW mode spi: add power control when set_cs_timing spi: stm32: make spurious and overrun interrupts visible spi: stm32h7: replace private SPI_1HZ_NS with NSEC_PER_SEC spi: stm32: defer probe for reset spi: stm32: driver uses reset controller only at init spi: stm32h7: ensure message are smaller than max size spi: stm32: use bitfield macros spi: stm32: do not mandate cs_gpio spi: stm32: properly handle 0 byte transfer spi: clps711xx: remove redundant white-space ...
2021-02-20Merge tag 'acpi-5.12-rc1' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI updates from Rafael Wysocki: "These update the ACPICA code in the kernel to upstream revision 20210105, fix and clean up the handling of device properties, add support for setting global profile of the platform, clean up device enumeration, the CPPC library, the APEI support and more, update the documentation, consolidate the printing of messages in several places and make assorted janitorial changes. Specifics: - Update ACPICA code in the kernel to upstream revision 20201113 with changes as follows: * Remove the MTMR (Mid-Timer) table (Al Stone). * Remove the VRTC table (Al Stone). * Add type casts for string functions (Bob Moore). * Update all copyrights to 2021 (Bob Moore). * Fix exception code class checks (Maximilian Luz). * Clean up exception code class checks (Maximilian Luz). * Fix -Wfallthrough (Nick Desaulniers). - Add support for setting and reading global profile of the platform along with documentation (Mark Pearson, Hans de Goede, Jiaxun Yang). - Fix fwnode properties matching and clean up the code handling device properties and its documentation (Rafael Wysocki, Andy Shevchenko). - Clean up ACPI-based device enumeration code (Rafael Wysocki). - Clean up the CPPC support library code (Ionela Voinescu). - Clean up the APEI support code (Yang Li, Yazen Ghannam). - Update GPIO-related properties documentation (Flavio Suligoi). - Consolidate and clean up the printing of messages in several places (Rafael Wysocki). - Fix error code path in configfs handling code (Qinglang Miao). - Use DEVICE_ATTR_<RW|RO|WO> macros where applicable (Dwaipayan Ray). - Replace tests for !ACPI_FAILURE with tests for ACPI_SUCCESS in multiple places (Bjorn Helgaas)" * tag 'acpi-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (44 commits) ACPI: property: Satisfy kernel doc validator (part 2) ACPI: property: Satisfy kernel doc validator (part 1) ACPI: property: Make acpi_node_prop_read() static ACPI: property: Remove dead code ACPI: property: Fix fwnode string properties matching ACPI: OSL: Clean up printing messages ACPI: OSL: Rework acpi_check_resource_conflict() ACPI: APEI: ERST: remove unneeded semicolon ACPI: thermal: Clean up printing messages ACPI: video: Clean up printing messages ACPI: button: Clean up printing messages ACPI: battery: Clean up printing messages ACPI: AC: Clean up printing messages ACPI: bus: Drop ACPI_BUS_COMPONENT which is not used any more ACPI: utils: Clean up printing messages ACPI: scan: Clean up printing messages ACPI: bus: Clean up printing messages ACPI: PM: Clean up printing messages ACPI: power: Clean up printing messages ACPI: APEI: Add is_generic_error() to identify GHES sources ...
2021-02-20Merge tag 'arm-platform-removal-v5.12' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC platform removals from Arnd Bergmann: "There are a lot of platforms that have not seen any interesting code changes in the past five years or more. I made a list and asked around which ones are no longer in use, and received confirmation about six ARM platforms and the TI C6x architecture that have all reached the end of their life upstream, with no known users remaining: - efm32 - added in 2011, first Cortex-M, no notable changes after 2013 - picoxcell - added in 2011, abandoned after 2012 acquisition - prima2 - added in 20111, no notable changes since 2015 - tango - added in 2015, sporadic changes until 2017, but abandoned - u300 - added in 2009, no notable changes since 2013 - zx - added in 2015 for both 32, 2017 for 64 bit, no notable changes - arch/c6x - added in 2011, but work stalled soon after that A number of other platforms on the original list turned out to still have users. In some cases there are out-of-tree patches and users that plan to contribute them in the future, in other cases the code is complete and works reliably" Link: https://lore.kernel.org/lkml/CAK8P3a2DZ8xQp7R=H=wewHnT2=a_=M53QsZOueMVEf7tOZLKNg@mail.gmail.com/ * tag 'arm-platform-removal-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: ARM: remove u300 platform ARM: remove tango platform ARM: remove zte zx platform ARM: remove sirf prima2/atlas platforms c6x: remove architecture MAINTAINERS: Remove deleted platform efm32 ARM: drop efm32 platform ARM: Remove PicoXcell platform support ARM: dts: Remove PicoXcell platforms
2021-02-15Merge branches 'acpi-misc', 'acpi-cppc', 'acpi-docs', 'acpi-config' and ↵Rafael J. Wysocki1-1/+1
'acpi-apei' * acpi-misc: ACPI: Test for ACPI_SUCCESS rather than !ACPI_FAILURE ACPI: Use DEVICE_ATTR_<RW|RO|WO> macros * acpi-cppc: ACPI: CPPC: initialise vaddr pointers to NULL ACPI: CPPC: add __iomem annotation to generic_comm_base pointer ACPI: CPPC: remove __iomem annotation for cpc_reg's address * acpi-docs: Documentation: ACPI: add new rule for gpio-line-names * acpi-config: ACPI: configfs: add missing check after configfs_register_default_group() * acpi-apei: ACPI: APEI: ERST: remove unneeded semicolon ACPI: APEI: Add is_generic_error() to identify GHES sources
2021-02-12Merge remote-tracking branch 'spi/for-5.12' into spi-nextMark Brown28-2423/+2244
2021-02-12spi: Skip zero-length transfers in spi_transfer_one_message()Nicolas Saenz Julienne1-1/+1
With the introduction of 26751de25d25 ("spi: bcm2835: Micro-optimise FIFO loops") it has become apparent that some users might initiate zero-length SPI transfers. A fact the micro-optimization omitted, and which turned out to cause crashes[1]. Instead of changing the micro-optimization itself, use a bigger hammer and skip zero-length transfers altogether for drivers using the default transfer_one_message() implementation. Reported-by: Phil Elwell <[email protected]> Fixes: 26751de25d25 ("spi: bcm2835: Micro-optimise FIFO loops") Signed-off-by: Nicolas Saenz Julienne <[email protected]> [1] https://github.com/raspberrypi/linux/issues/4100 Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-12spi: dw: Avoid stack content exposureKees Cook1-1/+1
Since "data" is u32, &data is a "u32 *" type, which means pointer math will move in u32-sized steps. This was meant to be a byte offset, so cast &data to "char *" to aim the copy into the correct location. Seen with -Warray-bounds (and found by Coverity): In file included from ./include/linux/string.h:269, from ./arch/powerpc/include/asm/paca.h:15, from ./arch/powerpc/include/asm/current.h:13, from ./include/linux/mutex.h:14, from ./include/linux/notifier.h:14, from ./include/linux/clk.h:14, from drivers/spi/spi-dw-bt1.c:12: In function 'memcpy', inlined from 'dw_spi_bt1_dirmap_copy_from_map' at drivers/spi/spi-dw-bt1.c:87:3: ./include/linux/fortify-string.h:20:29: warning: '__builtin_memcpy' offset 4 is out of the bounds [0, 4] of object 'data' with type 'u32' {aka 'unsigned int'} [-Warray-bounds] 20 | #define __underlying_memcpy __builtin_memcpy | ^ ./include/linux/fortify-string.h:191:9: note: in expansion of macro '__underlying_memcpy' 191 | return __underlying_memcpy(p, q, size); | ^~~~~~~~~~~~~~~~~~~ drivers/spi/spi-dw-bt1.c: In function 'dw_spi_bt1_dirmap_copy_from_map': drivers/spi/spi-dw-bt1.c:77:6: note: 'data' declared here 77 | u32 data; | ^~~~ Addresses-Coverity: CID 1497771 Out-of-bounds access Fixes: abf00907538e ("spi: dw: Add Baikal-T1 SPI Controller glue driver") Signed-off-by: Kees Cook <[email protected]> Reviewed-by: Gustavo A. R. Silva <[email protected]> Acked-by: Serge Semin <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-11spi: cadence-quadspi: Use spi_mem_dtr_supports_op()Pratyush Yadav1-59/+4
Use the newly introduced spi_mem_dtr_supports_op() to check DTR op support. This means the buswidth check does not need to be replicated. It also happens to fix a bug where STR ops with a 2-byte opcode would be reported as supported. Signed-off-by: Pratyush Yadav <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-11spi: spi-mem: add spi_mem_dtr_supports_op()Pratyush Yadav1-3/+19
spi_mem_default_supports_op() rejects DTR ops by default to ensure that the controller drivers that haven't been updated with DTR support continue to reject them. It also makes sure that controllers that don't support DTR mode at all (which is most of them at the moment) also reject them. This means that controller drivers that want to support DTR mode can't use spi_mem_default_supports_op(). Driver authors have to roll their own supports_op() function and mimic the buswidth checks. See spi-cadence-quadspi.c for example. Or even worse, driver authors might skip it completely or get it wrong. Add spi_mem_dtr_supports_op(). It provides a basic sanity check for DTR ops and performs the buswidth requirement check. Move the logic for checking buswidth in spi_mem_default_supports_op() to a separate function so the logic is not repeated twice. Signed-off-by: Pratyush Yadav <[email protected]> Reviewed-by: Miquel Raynal <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-11spi: atmel-quadspi: Disable the QSPI IP at suspend()Tudor Ambarus1-0/+1
It is safer to disable the QSPI IP at suspend, in order to avoid possible impact of glitches on the internal FSMs. This is a theoretical fix, there were no problems seen as of now. Tested on sama5d2 and sam9x60 versions of the IP. Signed-off-by: Tudor Ambarus <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-11spi: mpc52xx: Avoid using get_tbl()Christophe Leroy1-6/+6
get_tbl() is confusing as it returns the content TBL register on PPC32 but the concatenation of TBL and TBU on PPC64. Use mftb() instead. This will allow the removal of get_tbl() in a following patch. Signed-off-by: Christophe Leroy <[email protected]> Acked-by: Mark Brown <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/99bf008e2970de7f8ed3225cda69a6d06ae1a644.1612866360.git.christophe.leroy@csgroup.eu
2021-02-10spi: pxa2xx: Add IDs for the controllers found on Intel LynxpointAndy Shevchenko1-0/+2
Add IDs for the controllers found on Intel Lynxpoint. In particular it's Macbook Air 6,2 devices. Cc: Leif Liddy <[email protected]> Signed-off-by: Andy Shevchenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-10spi: pxa2xx: Fix the controller numbering for Wildcat PointAndy Shevchenko1-8/+19
Wildcat Point has two SPI controllers and added one is actually second one. Fix the numbering by adding the description of the first one. Fixes: caba248db286 ("spi: spi-pxa2xx-pci: Add ID and driver type for WildcatPoint PCH") Cc: Leif Liddy <[email protected]> Signed-off-by: Andy Shevchenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-08spi: mediatek: add set_cs_timing supportleilk.liu1-16/+56
this patch add set_cs_timing support for HW CS mode. Signed-off-by: leilk.liu <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-08spi: support CS timing for HW & SW modeleilk.liu1-3/+6
this patch supports the controller's HW CS and SW CS via use cs_gpio. Signed-off-by: leilk.liu <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-08spi: add power control when set_cs_timingleilk.liu1-3/+22
As to set_cs_timing takes effect immediately, power spi is needed when call spi_set_cs_timing. Signed-off-by: leilk.liu <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-05spi: stm32: make spurious and overrun interrupts visibleAlain Volmat1-11/+4
We do not expect to receive spurious interrupts so rise a warning if it happens. RX overrun is an error condition that signals a corrupted RX stream both in dma and in irq modes. Report the error and abort the transfer in either cases. Signed-off-by: Alain Volmat <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-05spi: stm32h7: replace private SPI_1HZ_NS with NSEC_PER_SECAmelie Delaunay1-3/+1
Replace SPI_1HZ_NS private constant with NSEC_PER_SEC, which is easier to read and understand. Signed-off-by: Amelie Delaunay <[email protected]> Signed-off-by: Alain Volmat <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-05spi: stm32: defer probe for resetAlain Volmat1-2/+8
Defer the probe operation when a reset controller device is expected but have not yet been probed. This change replaces use of devm_reset_control_get_exclusive() with devm_reset_control_get_optional_exclusive() as reset controller is optional which is now explicitly stated. Signed-off-by: Alain Volmat <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-05spi: stm32: driver uses reset controller only at initEtienne Carriere1-6/+5
Remove reset controller device reference from the device private structure since it is used only at probe time and can be discarded once used to reset the SPI device. Signed-off-by: Etienne Carriere <[email protected]> Signed-off-by: Alain Volmat <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-05spi: stm32h7: ensure message are smaller than max sizeAlain Volmat1-0/+14
Ensure that messages given to transfer_one handler can actually be handled by it. For that purpose rely on the SPI framework spi_split_transfers_maxsize function to split messages whenever necessary. Signed-off-by: Alain Volmat <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-05spi: stm32: use bitfield macrosAmelie Delaunay1-36/+18
To avoid defining shift and mask separately and hand-coding the bit manipulation, use the bitfield macros. Signed-off-by: Amelie Delaunay <[email protected]> Signed-off-by: Alain Volmat <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-05spi: stm32: do not mandate cs_gpioAlain Volmat1-6/+0
CS gpios is not mandatory, the driver should allow working even when CS are not given. Signed-off-by: Alain Volmat <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-05spi: stm32: properly handle 0 byte transferAlain Volmat1-0/+4
On 0 byte transfer request, return straight from the xfer function after finalizing the transfer. Fixes: dcbe0d84dfa5 ("spi: add driver for STM32 SPI controller") Signed-off-by: Alain Volmat <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-04Merge series "spi: Add support for Realtek RTL838x/RTL839x SoC SPI" from ↵Mark Brown2-0/+210
Bert Vermeulen <[email protected]>: v5: - Changed SoC compatible to list exact models v4: - Added SoC series-specific compatible matches. v3: - Added cpu_relax() to busy loop. - Dropped .remove callback from driver struct. - Use (variations of) realtek-rtl as prefix. - Dropped Kconfig entry, and use MACH_REALTEK_RTL setting to build the driver, since there's no point booting without the SPI-connected flash. v2: - Rewrote from spi-nor driver to regular spi driver, implementing only set_cs() and transfer_one(). (Thanks Chuanhong Guo!) Bert Vermeulen (2): dt-bindings: spi: Realtek RTL838x/RTL839x SPI controller spi: realtek-rtl: Add support for Realtek RTL838x/RTL839x SPI controllers .../bindings/spi/realtek,rtl-spi.yaml | 41 ++++ drivers/spi/Makefile | 1 + drivers/spi/spi-realtek-rtl.c | 209 ++++++++++++++++++ 3 files changed, 251 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/realtek,rtl-spi.yaml create mode 100644 drivers/spi/spi-realtek-rtl.c -- 2.25.1
2021-02-04spi: clps711xx: remove redundant white-spaceJunhao He1-1/+1
Remove redundant white-space, no functional change. Signed-off-by: Junhao He <[email protected]> Signed-off-by: Yicong Yang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-04spi: realtek-rtl: Add support for Realtek RTL838x/RTL839x SPI controllersBert Vermeulen2-0/+210
This driver likely also supports earlier (RTL8196) and later (RTL93xx) SoCs. The SPI hardware in these SoCs is specifically intended for connecting NOR bootflash chips, and only used for that in dozens of examined devices. However boiled down to basics, it's really just a half-duplex SPI controller. The hardware appears to have a vestigial second chip-select control, but it hasn't been seen in the wild and is thus not supported. Signed-off-by: Bert Vermeulen <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-03spi: spi-synquacer: fix set_cs handlingMasahisa Kojima1-0/+4
When the slave chip select is deasserted, DMSTOP bit must be set. Fixes: b0823ee35cf9 ("spi: Add spi driver for Socionext SynQuacer platform") Signed-off-by: Masahisa Kojima <[email protected]> Signed-off-by: Jassi Brar <[email protected]> Cc: [email protected] Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-02-02amba: Make the remove callback return voidUwe Kleine-König1-3/+2
All amba drivers return 0 in their remove callback. Together with the driver core ignoring the return value anyhow, it doesn't make sense to return a value here. Change the remove prototype to return void, which makes it explicit that returning an error value doesn't work as expected. This simplifies changing the core remove callback to return void, too. Reviewed-by: Ulf Hansson <[email protected]> Reviewed-by: Arnd Bergmann <[email protected]> Acked-by: Alexandre Belloni <[email protected]> Acked-by: Dmitry Torokhov <[email protected]> Acked-by: Krzysztof Kozlowski <[email protected]> # for drivers/memory Acked-by: Mark Brown <[email protected]> Acked-by: Linus Walleij <[email protected]> Acked-by: Suzuki K Poulose <[email protected]> # for hwtracing/coresight Acked-By: Vinod Koul <[email protected]> # for dmaengine Acked-by: Guenter Roeck <[email protected]> # for watchdog Acked-by: Wolfram Sang <[email protected]> # for I2C Acked-by: Takashi Iwai <[email protected]> # for sound Acked-by: Vladimir Zapolskiy <[email protected]> # for memory/pl172 Acked-by: Greg Kroah-Hartman <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Uwe Kleine-König <[email protected]>
2021-02-01spi: fsl: invert spisel_boot signal on MPC8309Rasmus Villemoes1-1/+1
Commit 7a2da5d7960a ("spi: fsl: Fix driver breakage when SPI_CS_HIGH is not set in spi->mode") broke our MPC8309 board by effectively inverting the boolean value passed to fsl_spi_cs_control. The SPISEL_BOOT signal is used as chipselect, but it's not a gpio, so we cannot rely on gpiolib handling the polarity. Adapt to the new world order by inverting the logic here. This does assume that the slave sitting at the SPISEL_BOOT is active low, but should that ever turn out not to be the case, one can create a stub gpiochip driver controlling a single gpio (or rather, a single "spo", special-purpose output). Fixes: 7a2da5d7960a ("spi: fsl: Fix driver breakage when SPI_CS_HIGH is not set in spi->mode") Cc: [email protected] Signed-off-by: Rasmus Villemoes <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2021-01-27ACPI: Test for ACPI_SUCCESS rather than !ACPI_FAILUREBjorn Helgaas1-1/+1
The double negative makes it hard to read "if (!ACPI_FAILURE(status))". Replace it with "if (ACPI_SUCCESS(status))". Signed-off-by: Bjorn Helgaas <[email protected]> Acked-by: Guenter Roeck <[email protected]> Acked-by: Alex Deucher <[email protected]> Acked-by: Takashi Iwai <[email protected]> Acked-by: Mark Brown <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>
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