- 15 Feb, 2022 1 commit
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Wolfram Sang authored
i2c_setup_smbus_alert() is only needed within the I2C core, so no need to expose it to other modules. Signed-off-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by:
Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by:
Wolfram Sang <wsa@kernel.org>
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- 11 Feb, 2022 13 commits
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Conor Dooley authored
Add device tree bindings for the i2c controller on the Microchip PolarFire SoC. Signed-off-by:
Daire McNamara <daire.mcnamara@microchip.com> Reviewed-by:
Rob Herring <robh@kernel.org> Signed-off-by:
Conor Dooley <conor.dooley@microchip.com> Acked-by:
Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by:
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Rafał Miłecki authored
BCM4908 SoCs use the same I2C hardware block as STB and BCM63xx devices. Signed-off-by:
Rafał Miłecki <rafal@milecki.pl> Acked-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Geert Uytterhoeven authored
Add support for the I2C Bus Interface on R-Car Gen4 SoCs (e.g. R-Car S4-8) by matching on a family-specific compatible value. While I2C on R-Car Gen4 does support some extra features (Slave Clock Stretch Select), for now it is treated the same as I2C on R-Car Gen3. Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by:
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Geert Uytterhoeven authored
Document support for the I2C Bus Interfaces in the Renesas R-Car S4-8 (R8A779F0) SoC, including a new family-specific compatible value for the R-Car Gen4 family. Signed-off-by:
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Jan Dabros authored
Implement an I2C controller sharing mechanism between the host (kernel) and PSP co-processor on some platforms equipped with AMD Cezanne SoC. On these platforms we need to implement "software" i2c arbitration. Default arbitration owner is PSP and kernel asks for acquire as well as inform about release of the i2c bus via mailbox mechanism. +---------+ <- ACQUIRE | | +---------| CPU |\ | | | \ +----------+ SDA | +---------+ \ | |------- MAILBOX +--> | I2C-DW | SCL | +---------+ | |------- | | | +----------+ +---------| PSP | <- ACK | | +---------+ +---------+ <- RELEASE | | +---------| CPU | | | | +----------+ SDA | +---------+ | |------- MAILBOX +--> | I2C-DW | SCL | +---------+ / | |------- | | | / +----------+ +---------| PSP |/ <- ACK | | +---------+ The solution is similar to i2c-designware-baytrail.c implementation, where we are using a generic i2c-designware-* driver with a small "wrapper". In contrary to baytrail semaphore implementation, beside internal acquire_lock() and release_lock() methods we are also applying quirks to lock_bus() and unlock_bus() global adapter methods. With this in place all i2c clients drivers may lock i2c bus for a desired number of i2c transactions (e.g. write-wait-read) without being aware of that such bus is shared with another entity. Modify i2c_dw_probe_lock_support() to select correct semaphore implementation at runtime, since now we have more than one available. Configure new matching ACPI ID "AMDI0019" and register ARBITRATION_SEMAPHORE flag in order to distinguish setup with PSP arbitration. Add myself as a reviewer for I2C DesignWare in order to help with reviewing and testing possible changes touching new i2c-designware-amdpsp.c module. Signed-off-by:Jan Dabros <jsd@semihalf.com> Reviewed-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by:
Jarkko Nikula <jarkko.nikula@linux.intel.com> Tested-by:
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Jan Dabros authored
All accesses to controller's registers should be protected on probe, disable and xfer paths. This is needed for i2c bus controllers that are shared with but not controller by kernel. Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Acked-by:
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Terry Bowman authored
Enable EFCH MMIO using check for SMBus PCI revision ID value 0x51 or greater. This PCI revision ID check will enable family 17h and future AMD processors with the same EFCH SMBus controller HW. Signed-off-by:
Terry Bowman <terry.bowman@amd.com> Reviewed-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by:
Jean Delvare <jdelvare@suse.de> Signed-off-by:
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Terry Bowman authored
AMD processors include registers capable of selecting between 2 SMBus ports. Port selection is made during each user access by writing to FCH::PM::DECODEEN[smbus0sel]. Change the driver to use MMIO during SMBus port selection because cd6h/cd7h port I/O is not available on later AMD processors. Signed-off-by:
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Terry Bowman authored
The EFCH SMBus controller's base address is determined using details in FCH::PM::DECODEEN[smbusasfiobase] and FCH::PM::DECODEEN[smbusasfioen].These register fields were accessed using cd6h/cd7h port I/O. cd6h/cd7h port I/O is no longer available in later AMD processors. Change base address detection to use MMIO instead of port I/O cd6h/cd7h. Signed-off-by:
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Terry Bowman authored
EFCH cd6h/cd7h port I/O may no longer be available on later AMD processors and it is recommended to use MMIO instead. Update the request and release functions to support MMIO. MMIO request/release and mmapping require details during cleanup. Add a MMIO configuration structure containing resource and vaddress details for mapping the region, accessing the region, and releasing the region. Signed-off-by:
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Terry Bowman authored
Move port selection code into a separate function. Refactor is in preparation for following MMIO changes. Signed-off-by:
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Terry Bowman authored
Move SMBus controller base address detection into function. Refactor is in preparation for following MMIO changes. Signed-off-by:
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Terry Bowman authored
Move duplicated region request and release code into a function. Move is in preparation for following MMIO changes. Signed-off-by:
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- 10 Feb, 2022 3 commits
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Terry Bowman authored
Replace number constant with #define to improve readability and maintainability. Signed-off-by:
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Wolfram Sang authored
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Terry Bowman authored
Support for requesting muxed memory region is implemented but not currently callable as a macro. Add the request muxed memory region macro. MMIO memory accesses can be synchronized using request_mem_region() which is already available. This call will return failure if the resource is busy. The 'muxed' version of this macro will handle a busy resource by using a wait queue to retry until the resource is available. Signed-off-by:
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- 07 Feb, 2022 4 commits
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Jonathan Neuschäfer authored
The comments in this driver have a few typos. Let's fix them. Signed-off-by:
Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-by:
Randy Dunlap <rdunlap@infradead.org> Reviewed-by: tali.perry@nuvoton.com Signed-off-by:
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Rafael J. Wysocki authored
Replace acpi_bus_get_device() that is going to be dropped with acpi_fetch_acpi_dev(). No intentional functional impact. Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by:
Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by:
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Christophe JAILLET authored
Some resource should be released if an error occurs in 'bcm2835_i2c_probe()'. Add an error handling path and the needed 'clk_disable_unprepare()' and 'clk_rate_exclusive_put()' calls. While at it, rework the bottom of the function to use this newly added error handling path and have an explicit and more standard "return 0;" at the end of the normal path. Fixes: bebff81f ("i2c: bcm2835: Model Divider in CCF") Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> [wsa: rebased] Signed-off-by:
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Christophe JAILLET authored
As stated in [1], dma_set_mask() with a 64-bit mask never fails if dev->dma_mask is non-NULL. So, if it fails, the 32 bits case will also fail for the same reason. Simplify code and remove some dead code accordingly. [1]: https://lkml.org/lkml/2021/6/7/398Signed-off-by:
Nehal Bakulchandra Shah <Nehal-bakulchandra.Shah@amd.com> Signed-off-by:
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- 28 Jan, 2022 5 commits
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Kewei Xu authored
Add i2c compatible for MT8186. Compare to MT8192 i2c controller, MT8186 doesn't need handshake signal witch apdma. Signed-off-by:
Kewei Xu <kewei.xu@mediatek.com> Reviewed-by:
Qii Wang <qii.wang@mediatek.com> Signed-off-by:
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Kewei Xu authored
Add a DT binding documentation for the MT8186 soc. Signed-off-by:
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Akhil R authored
Change of_*() functions to device_*() for firmware agnostic usage. This allows to have the smbus_alert interrupt without any changes in the controller drivers using the ACPI table. Signed-off-by:
Akhil R <akhilrajeev@nvidia.com> Reviewed-by:
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Akhil R authored
Add a detailed example of the named interrupts in the ACPI table. Signed-off-by:
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Akhil R authored
Add fwnode_irq_get_byname() to get an interrupt by name from either ACPI table or Device Tree, whichever is used for enumeration. In the ACPI case, this allow us to use 'interrupt-names' in _DSD which can be mapped to Interrupt() resource by index. The implementation is similar to 'interrupt-names' in the Device Tree. Signed-off-by:
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- 23 Jan, 2022 6 commits
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Linus Torvalds authored
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Linus Torvalds authored
Merge tag 'perf-tools-for-v5.17-2022-01-22' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull more perf tools updates from Arnaldo Carvalho de Melo: - Fix printing 'phys_addr' in 'perf script'. - Fix failure to add events with 'perf probe' in ppc64 due to not removing leading dot (ppc64 ABIv1). - Fix cpu_map__item() python binding building. - Support event alias in form foo-bar-baz, add pmu-events and parse-event tests for it. - No need to setup affinities when starting a workload or attaching to a pid. - Use path__join() to compose a path instead of ad-hoc snprintf() equivalent. - Override attr->sample_period for non-libpfm4 events. - Use libperf cpumap APIs instead of accessing the internal state directly. - Sync x86 arch prctl headers and files changed by the new set_mempolicy_home_node syscall with the kernel sources. - Remove duplicate include in cpumap.h. - Remove redundant err variable. * tag 'perf-tools-for-v5.17-2022-01-22' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf tools: Remove redundant err variable perf test: Add parse-events test for aliases with hyphens perf test: Add pmu-events test for aliases with hyphens perf parse-events: Support event alias in form foo-bar-baz perf evsel: Override attr->sample_period for non-libpfm4 events perf cpumap: Remove duplicate include in cpumap.h perf cpumap: Migrate to libperf cpumap api perf python: Fix cpu_map__item() building perf script: Fix printing 'phys_addr' failure issue tools headers UAPI: Sync files changed by new set_mempolicy_home_node syscall tools headers UAPI: Sync x86 arch prctl headers with the kernel sources perf machine: Use path__join() to compose a path instead of snprintf(dir, '/', filename) perf evlist: No need to setup affinities when disabling events for pid targets perf evlist: No need to setup affinities when enabling events for pid targets perf stat: No need to setup affinities when starting a workload perf affinity: Allow passing a NULL arg to affinity__cleanup() perf probe: Fix ppc64 'perf probe add events failed' case
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-traceLinus Torvalds authored
Pull ftrace fix from Steven Rostedt: "Fix s390 breakage from sorting mcount tables. The latest merge of the tracing tree sorts the mcount table at build time. But s390 appears to do things differently (like always) and replaces the sorted table back to the original unsorted one. As the ftrace algorithm depends on it being sorted, bad things happen when it is not, and s390 experienced those bad things. Add a new config to tell the boot if the mcount table is sorted or not, and allow s390 to opt out of it" * tag 'trace-v5.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftrace: Fix assuming build time sort works for s390
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Steven Rostedt (Google) authored
To speed up the boot process, as mcount_loc needs to be sorted for ftrace to work properly, sorting it at build time is more efficient than boot up and can save milliseconds of time. Unfortunately, this change broke s390 as it will modify the mcount_loc location after the sorting takes place and will put back the unsorted locations. Since the sorting is skipped at boot up if it is believed that it was sorted at run time, ftrace can crash as its algorithms are dependent on the list being sorted. Add a new config BUILDTIME_MCOUNT_SORT that is set when BUILDTIME_TABLE_SORT but not if S390 is set. Use this config to determine if sorting should take place at boot up. Link: https://lore.kernel.org/all/yt9dee51ctfn.fsf@linux.ibm.com/ Fixes: 72b3942a ("scripts: ftrace - move the sort-processing in ftrace_init") Reported-by:
Sven Schnelle <svens@linux.ibm.com> Tested-by:
Heiko Carstens <hca@linux.ibm.com> Signed-off-by:
Steven Rostedt (Google) <rostedt@goodmis.org>
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Linus Torvalds authored
Merge tag 'kbuild-fixes-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Bring include/uapi/linux/nfc.h into the UAPI compile-test coverage - Revert the workaround of CONFIG_CC_IMPLICIT_FALLTHROUGH - Fix build errors in certs/Makefile * tag 'kbuild-fixes-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: certs: Fix build error when CONFIG_MODULE_SIG_KEY is empty certs: Fix build error when CONFIG_MODULE_SIG_KEY is PKCS#11 URI Revert "Makefile: Do not quote value for CONFIG_CC_IMPLICIT_FALLTHROUGH" usr/include/Makefile: add linux/nfc.h to the compile-test coverage
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git://github.com/norov/linuxLinus Torvalds authored
Pull bitmap updates from Yury Norov: - introduce for_each_set_bitrange() - use find_first_*_bit() instead of find_next_*_bit() where possible - unify for_each_bit() macros * tag 'bitmap-5.17-rc1' of git://github.com/norov/linux: vsprintf: rework bitmap_list_string lib: bitmap: add performance test for bitmap_print_to_pagebuf bitmap: unify find_bit operations mm/percpu: micro-optimize pcpu_is_populated() Replace for_each_*_bit_from() with for_each_*_bit() where appropriate find: micro-optimize for_each_{set,clear}_bit() include/linux: move for_each_bit() macros from bitops.h to find.h cpumask: replace cpumask_next_* with cpumask_first_* where appropriate tools: sync tools/bitmap with mother linux all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate cpumask: use find_first_and_bit() lib: add find_first_and_bit() arch: remove GENERIC_FIND_FIRST_BIT entirely include: move find.h from asm_generic to linux bitops: move find_bit_*_le functions from le.h to find.h bitops: protect find_first_{,zero}_bit properly
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- 22 Jan, 2022 8 commits
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Minghao Chi authored
Return value from perf_event__process_tracing_data() directly instead of taking this in another redundant variable. Reported-by:
Zeal Robot <zealci@zte.com.cn> Signed-off-by:
Minghao Chi <chi.minghao@zte.com.cn> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20220112080109.666800-1-chi.minghao@zte.com.cnSigned-off-by:
CGEL ZTE <cgel.zte@gmail.com> Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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John Garry authored
Add a test which allows us to test parsing an event alias with hyphens. Since these events typically do not exist on most host systems, add the alias to the fake pmu. Function perf_pmu__test_parse_init() has terms added to match known test aliases. Signed-off-by:
John Garry <john.garry@huawei.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Qi Liu <liuqi115@huawei.com> Cc: Shaokun Zhang <zhangshaokun@hisilicon.com> Cc: linuxarm@huawei.com Link: https://lore.kernel.org/r/1642432215-234089-4-git-send-email-john.garry@huawei.comSigned-off-by:
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John Garry authored
Add a test for aliases with hyphens in the name to ensure that the pmu-events tables are as expects. There should be no reason why these sort of aliases would be treated differently, but no harm in checking. Signed-off-by:
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John Garry authored
Event aliasing for events whose name in the form foo-bar-baz is not supported, while foo-bar, foo_bar_baz, and other combinations are, i.e. two hyphens are not supported. The HiSilicon D06 platform has events in such form: $ ./perf list sdir-home-migrate List of pre-defined events (to be used in -e): uncore hha: sdir-home-migrate [Unit: hisi_sccl,hha] $ sudo ./perf stat -e sdir-home-migrate event syntax error: 'sdir-home-migrate' \___ parser error Run 'perf list' for a list of valid events Usage: perf stat [<options>] [<command>] -e, --event <event>event selector. use 'perf list' to list available events To support, add an extra PMU event symbol type for "baz", and add a new rule in the bison file. Signed-off-by: -
German Gomez authored
A previous patch preventing "attr->sample_period" values from being overridden in pfm events changed a related behaviour in arm-spe. Before said patch: perf record -c 10000 -e arm_spe_0// -- sleep 1 Would yield an SPE event with period=10000. After the patch, the period in "-c 10000" was being ignored because the arm-spe code initializes sample_period to a non-zero value. This patch restores the previous behaviour for non-libpfm4 events. Fixes: ae5dcc8a (“perf record: Prevent override of attr->sample_period for libpfm4 events”) Reported-by:
Chase Conklin <chase.conklin@arm.com> Signed-off-by:
German Gomez <german.gomez@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Cc: Yonghong Song <yhs@fb.com> Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: http://lore.kernel.org/lkml/20220118144054.2541-1-german.gomez@arm.comSigned-off-by:
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Lv Ruyi authored
Remove all but the first include of stdbool.h from cpumap.h. Reported-by:
Lv Ruyi <lv.ruyi@zte.com.cn> Acked-by:
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Ian Rogers authored
Switch from directly accessing the perf_cpu_map to using the appropriate libperf API when possible. Using the API simplifies the job of refactoring use of perf_cpu_map. Signed-off-by:
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Ian Rogers authored
Value should be built as an integer. Switch some uses of perf_cpu_map to use the library API. Fixes: 6d18804b ("perf cpumap: Give CPUs their own type") Signed-off-by:
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