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* spi: spi-fsl-qspi: Fix return value check of devm_ioremap() in probeWei Yongjun2020-04-221-2/+2
| | | | | | | | | | | | | In case of error, the function devm_ioremap() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Fixes: 858e26a515c2 ("spi: spi-fsl-qspi: Reduce devm_ioremap size to 4 times AHB buffer size") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Ashish Kumar <Ashish.Kumar@nxp.com> Acked-by: Han Xu <han.xu@nxp.com> Link: https://lore.kernel.org/r/20200422014543.111070-1-weiyongjun1@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: bcm-qspi: MSPI_SPCR0_MSB MSTR bit exists only on legacy controllersKamal Dasu2020-04-211-1/+7
| | | | | | | | | | Set MASTER bit on the MSPI_SPCR0_MSB only for legacy MSPI and HIF_MSPI controllers. Fixes: fa236a7ef240 ("spi: bcm-qspi: Add Broadcom MSPI driver") Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Link: https://lore.kernel.org/r/20200420190853.45614-10-kdasu.kdev@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: bcm-qspi: add support for MSPI sys clk 108MhzKamal Dasu2020-04-211-0/+44
| | | | | | | | | Adding support for MSPI sys clk 108Mhz available on 7216 and 7278 BRCMSTB SoCs. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Link: https://lore.kernel.org/r/20200420190853.45614-9-kdasu.kdev@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: bcm-qspi: Use fastbr setting to allow faster MSPI speedsKamal Dasu2020-04-211-3/+33
| | | | | | | | | | Setting MSPI_SPCR3.fastbr=1 allows using clock divider (SPBR) values of 1-7, while the default value prohibits these values and requires a minimum clock divider value of 8. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Link: https://lore.kernel.org/r/20200420190853.45614-8-kdasu.kdev@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: bcm-qspi: Handle lack of MSPI_REV offsetFlorian Fainelli2020-04-211-2/+48
| | | | | | | | | | | | Older MIPS chips have a QSPI/MSPI controller that does not have the MSPI_REV offset, reading from that offset will cause a bus error. Match their compatible string and do not perform a read from that register in that case. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Link: https://lore.kernel.org/r/20200420190853.45614-4-kdasu.kdev@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: orion: Convert to use GPIO descriptorsLinus Walleij2020-04-211-54/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This converts the Orion SPI master to use GPIO descriptors. The SPI core will obtain and manage the CS GPIOs, if any are defined. I make one sematic change: when a certain chip select is using a GPIO line instead of the native CS I simply just enable the 1:1 mapped native CS that would have been used if the GPIO was not there. As we set the SPI_MASTER_GPIO_SS the .set_cs() callback will be called for all chip selects whether native or not, and the important thing for the driver is that the previous native chip select (if any) is deasserted, which other chip select is asserted instead does not really matter. The previous code went to great lengths to ascertain that the first hw CS which was hiding behind a GPIO line was used for all cases when the line is not using native chip select but this should not matter at all, just use the one "underneath" the GPIO at all times. When a GPIO is used for CS, the SPI_CS_HIGH flag is enforced, so the native chip select is also inverted. But that should not matter since we are not using it anyways. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Cc: Gregory CLEMENT <gregory.clement@bootlin.com> Cc: Tomas Paukrt <tomaspaukrt@email.cz> Cc: Jan Kundrát <jan.kundrat@cesnet.cz> Link: https://lore.kernel.org/r/20200415175613.220767-1-linus.walleij@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: hisi-sfc-v3xx: add error check after per operationYicong Yang2020-04-171-1/+25
| | | | | | | | | | | | | | | | The controller may receive instructions of accessing protected address, or may perform failed page program. These operations will not succeed and the controller will receive interrupts when such failure occur. Previously we don't check the interrupts and return 0 even if such operation fails. Check the interrupts after per command and inform the user if there is an error. Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Acked-by: John Garry <john.garry@huawei.com> Link: https://lore.kernel.org/r/1587109707-23597-1-git-send-email-yangyicong@hisilicon.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: stm32-qspi: Add pm_runtime supportPatrice Chotard2020-04-171-4/+53
| | | | | | | | | | | | | | | By default, STM32_AUTOSUSPEND_DELAY is set to -1 which has for effect to prevent runtime suspends. Runtime suspends can be activated by setting autosuspend_delay_ms using sysfs entry : echo {delay_in_ms} > /sys/devices/platform/soc/58003000.spi/power/autosusp end_delay_ms) Signed-off-by: Christophe Kerello <christophe.kerello@st.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> Link: https://lore.kernel.org/r/20200417121241.6473-1-patrice.chotard@st.com Signed-off-by: Mark Brown <broonie@kernel.org>
* Merge series "Cleanup chip info in spi-dw driver" from Clement Leger ↵Mark Brown2020-04-162-68/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | <cleger@kalray.eu>: Some mechanisms have no more user, and as such code paths are unused. Remove these code paths and associated structs members. Clement Leger (2): spi: dw: remove unused dw_spi_chip handling spi: dw: remove cs_control and poll_mode members from chip_data drivers/spi/spi-dw.c | 57 +------------------------------------------- drivers/spi/spi-dw.h | 12 ---------- 2 files changed, 1 insertion(+), 68 deletions(-) -- 2.17.1
| * spi: dw: remove cs_control and poll_mode members from chip_dataClement Leger2020-04-161-40/+1
| | | | | | | | | | | | | | | | | | | | Since these members were initialized only with previous dw_spi_chip struct members and that there is no user anymore, remove them. Along this removal, remove code path which were using these members. Signed-off-by: Clement Leger <cleger@kalray.eu> Link: https://lore.kernel.org/r/20200416110916.22633-2-cleger@kalray.eu Signed-off-by: Mark Brown <broonie@kernel.org>
| * spi: dw: remove unused dw_spi_chip handlingClement Leger2020-04-162-28/+0
| | | | | | | | | | | | | | | | | | The path of code using this struct is unused since there is no more user of this. Remove code and struct definition. Signed-off-by: Clement Leger <cleger@kalray.eu> Link: https://lore.kernel.org/r/20200416110916.22633-1-cleger@kalray.eu Signed-off-by: Mark Brown <broonie@kernel.org>
* | spi: spi-fsl-qspi: Reduce devm_ioremap size to 4 times AHB buffer sizeAshish Kumar2020-04-161-3/+4
|/ | | | | | | | | | | | | | | | | | | | | | | | Reduce devm_ioremap size to (4 * AHB_BUFER_SIZE) rather than mapping complete QSPI-Memmory as driver is now independent of flash size. Flash of any size can be accessed. Issue was reported on platform where devm_ioremap failure is observed with size > 256M. Error log on LS1021ATWR : fsl-quadspi 1550000.spi: ioremap failed for resource [mem 0x40000000-0x7fffffff] fsl-quadspi 1550000.spi: Freescale QuadSPI probe failed fsl-quadspi: probe of 1550000.spi failed with error -12 This change was also suggested previously: https://patchwork.kernel.org/patch/10508753/#22166385 Suggested-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com> Signed-off-by: Ashish Kumar <Ashish.kumar@nxp.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de> Link: https://lore.kernel.org/r/1587037399-18672-1-git-send-email-Ashish.Kumar@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: spidev: Add support for Octal mode data transfersGeert Uytterhoeven2020-04-161-1/+2
| | | | | | | | | Include the flags for Octal mode data transfers in the mask, so userspace can set them. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20200416101835.14573-2-geert+renesas@glider.be Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: spi-sh-msiof: Fix checkpatch error Complex macros should use ()Aishwarya R2020-04-141-1/+1
| | | | | | | | | Fixed checkpatch error "Macros with complex values should be enclosed in parentheses" Signed-off-by: Aishwarya R <raishwar@visteon.com> Link: https://lore.kernel.org/r/20200406155301.21768-1-raishwar@visteon.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: spi-mtk-nor: make mtk_nor_exec_op() statucJason Yan2020-04-141-1/+1
| | | | | | | | | | | | Fix the following sparse warning: drivers/spi/spi-mtk-nor.c:394:5: warning: symbol 'mtk_nor_exec_op' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Jason Yan <yanaijie@huawei.com> Link: https://lore.kernel.org/r/20200409085009.44971-1-yanaijie@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: sprd: adi: Use IS_ENABLED() to validate configsBaolin Wang2020-04-141-1/+1
| | | | | | | | | | | | If the Spreadtrum wachdog is loaded as a module, we still need set default watchdog reboot mode in case the rebooting is caused by watchdog. But now we can not set the watchdog reboot mode by using '#ifdef' to validate the watchdog configuration, thus we can change to use IS_ENABLED() to fix this issue. Signed-off-by: Baolin Wang <baolin.wang7@gmail.com> Link: https://lore.kernel.org/r/e38807eadd5550add8eb90dd3f8fbe2cfc39cc13.1586759322.git.baolin.wang7@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: remove redundant assignment to variable msColin Ian King2020-04-141-1/+1
| | | | | | | | | | | | The variable ms is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Addresses-Coverity: ("Unused value") Link: https://lore.kernel.org/r/20200410122315.17523-1-colin.king@canonical.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: spi-fsl-spi: Fix checkpatch error "foo * bar" should be "foo *bar"Aishwarya R2020-04-141-1/+1
| | | | | | | | This patch fixes checkpatch error "foo * bar" should be "foo *bar" Signed-off-by: Aishwarya R <aishwaryarj100@gmail.com> Link: https://lore.kernel.org/r/20200407122855.5531-1-aishwaryarj100@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: spi-fsl-lpspi: Fix indentation and open brace should be on the previous ↵Aishwarya R2020-04-141-8/+7
| | | | | | | | | | | line Resolved open brace { should be on the previous line checkpatch error and fix the indentation Signed-off-by: Aishwarya R <aishwaryarj100@gmail.com> Link: https://lore.kernel.org/r/20200407125557.6520-1-aishwaryarj100@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
* Merge tag 'kbuild-v5.7-2' of ↵Linus Torvalds2020-04-112-8/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - raise minimum supported binutils version to 2.23 - remove old CONFIG_AS_* macros that we know binutils >= 2.23 supports - move remaining CONFIG_AS_* tests to Kconfig from Makefile - enable -Wtautological-compare warnings to catch more issues - do not support GCC plugins for GCC <= 4.7 - fix various breakages of 'make xconfig' - include the linker version used for linking the kernel into LINUX_COMPILER, which is used for the banner, and also exposed to /proc/version - link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y, which allows us to remove the lib-ksyms.o workaround, and to solve the last known issue of the LLVM linker - add dummy tools in scripts/dummy-tools/ to enable all compiler tests in Kconfig, which will be useful for distro maintainers - support the single switch, LLVM=1 to use Clang and all LLVM utilities instead of GCC and Binutils. - support LLVM_IAS=1 to enable the integrated assembler, which is still experimental * tag 'kbuild-v5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (36 commits) kbuild: fix comment about missing include guard detection kbuild: support LLVM=1 to switch the default tools to Clang/LLVM kbuild: replace AS=clang with LLVM_IAS=1 kbuild: add dummy toolchains to enable all cc-option etc. in Kconfig kbuild: link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y MIPS: fw: arc: add __weak to prom_meminit and prom_free_prom_memory kbuild: remove -I$(srctree)/tools/include from scripts/Makefile kbuild: do not pass $(KBUILD_CFLAGS) to scripts/mkcompile_h Documentation/llvm: fix the name of llvm-size kbuild: mkcompile_h: Include $LD version in /proc/version kconfig: qconf: Fix a few alignment issues kconfig: qconf: remove some old bogus TODOs kconfig: qconf: fix support for the split view mode kconfig: qconf: fix the content of the main widget kconfig: qconf: Change title for the item window kconfig: qconf: clean deprecated warnings gcc-plugins: drop support for GCC <= 4.7 kbuild: Enable -Wtautological-compare x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2 crypto: x86 - clean up poly1305-x86_64-cryptogams.S by 'make clean' ...
| * drm/i915: remove always-defined CONFIG_AS_MOVNTDQAMasahiro Yamada2020-04-082-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CONFIG_AS_MOVNTDQA was introduced by commit 0b1de5d58e19 ("drm/i915: Use SSE4.1 movntdqa to accelerate reads from WC memory"). We raise the minimal supported binutils version from time to time. The last bump was commit 1fb12b35e5ff ("kbuild: Raise the minimum required binutils version to 2.21"). I confirmed the code in $(call as-instr,...) can be assembled by the binutils 2.21 assembler and also by LLVM integrated assembler. Remove CONFIG_AS_MOVNTDQA, which is always defined. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jani Nikula <jani.nikula@intel.com>
* | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2020-04-1116-24/+23
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge yet more updates from Andrew Morton: - Almost all of the rest of MM (memcg, slab-generic, slab, pagealloc, gup, hugetlb, pagemap, memremap) - Various other things (hfs, ocfs2, kmod, misc, seqfile) * akpm: (34 commits) ipc/util.c: sysvipc_find_ipc() should increase position index kernel/gcov/fs.c: gcov_seq_next() should increase position index fs/seq_file.c: seq_read(): add info message about buggy .next functions drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warnings change email address for Pali Rohár selftests: kmod: test disabling module autoloading selftests: kmod: fix handling test numbers above 9 docs: admin-guide: document the kernel.modprobe sysctl fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once() kmod: make request_module() return an error when autoloading is disabled mm/memremap: set caching mode for PCI P2PDMA memory to WC mm/memory_hotplug: add pgprot_t to mhp_params powerpc/mm: thread pgprot_t through create_section_mapping() x86/mm: introduce __set_memory_prot() x86/mm: thread pgprot_t through init_memory_mapping() mm/memory_hotplug: rename mhp_restrictions to mhp_params mm/memory_hotplug: drop the flags field from struct mhp_restrictions mm/special: create generic fallbacks for pte_special() and pte_mkspecial() mm/vma: introduce VM_ACCESS_FLAGS mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS ...
| * | drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warningskbuild test robot2020-04-111-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove dev_err() messages after platform_get_irq*() failures. platform_get_irq() already prints an error. Generated by: scripts/coccinelle/api/platform_get_irq.cocci Fixes: 6c41ac96ad92 ("dmaengine: tegra-apb: Support COMPILE_TEST") Signed-off-by: kbuild test robot <lkp@intel.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Cc: Laxman Dewangan <ldewangan@nvidia.com> Cc: Vinod Koul <vinod.koul@linux.intel.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Jon Hunter <jonathanh@nvidia.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.21.2002271133450.2973@hadrien Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | change email address for Pali RohárPali Rohár2020-04-1114-22/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For security reasons I stopped using gmail account and kernel address is now up-to-date alias to my personal address. People periodically send me emails to address which they found in source code of drivers, so this change reflects state where people can contact me. [ Added .mailmap entry as per Joe Perches - Linus ] Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Joe Perches <joe@perches.com> Link: http://lkml.kernel.org/r/20200307104237.8199-1-pali@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | mm/vma: introduce VM_ACCESS_FLAGSAnshuman Khandual2020-04-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are many places where all basic VMA access flags (read, write, exec) are initialized or checked against as a group. One such example is during page fault. Existing vma_is_accessible() wrapper already creates the notion of VMA accessibility as a group access permissions. Hence lets just create VM_ACCESS_FLAGS (VM_READ|VM_WRITE|VM_EXEC) which will not only reduce code duplication but also extend the VMA accessibility concept in general. Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Salter <msalter@redhat.com> Cc: Nick Hu <nickhu@andestech.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Rob Springer <rspringer@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Link: http://lkml.kernel.org/r/1583391014-8170-3-git-send-email-anshuman.khandual@arm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge tag 'for-linus-5.7-rc1b-tag' of ↵Linus Torvalds2020-04-1113-107/+125
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull more xen updates from Juergen Gross: - two cleanups - fix a boot regression introduced in this merge window - fix wrong use of memory allocation flags * tag 'for-linus-5.7-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: x86/xen: fix booting 32-bit pv guest x86/xen: make xen_pvmmu_arch_setup() static xen/blkfront: fix memory allocation flags in blkfront_setup_indirect() xen: Use evtchn_type_t as a type for event channels
| * | | xen/blkfront: fix memory allocation flags in blkfront_setup_indirect()Juergen Gross2020-04-071-5/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 1d5c76e664333 ("xen-blkfront: switch kcalloc to kvcalloc for large array allocation") didn't fix the issue it was meant to, as the flags for allocating the memory are GFP_NOIO, which will lead the memory allocation falling back to kmalloc(). So instead of GFP_NOIO use GFP_KERNEL and do all the memory allocation in blkfront_setup_indirect() in a memalloc_noio_{save,restore} section. Fixes: 1d5c76e664333 ("xen-blkfront: switch kcalloc to kvcalloc for large array allocation") Cc: stable@vger.kernel.org Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Acked-by: Roger Pau Monné <roger.pau@citrix.com> Link: https://lore.kernel.org/r/20200403090034.8753-1-jgross@suse.com Signed-off-by: Juergen Gross <jgross@suse.com>
| * | | xen: Use evtchn_type_t as a type for event channelsYan Yankovskyi2020-04-0712-102/+113
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make event channel functions pass event channel port using evtchn_port_t type. It eliminates signed <-> unsigned conversion. Signed-off-by: Yan Yankovskyi <yyankovskyi@gmail.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Link: https://lore.kernel.org/r/20200323152343.GA28422@kbp1-lhp-F74019 Signed-off-by: Juergen Gross <jgross@suse.com>
* | | | Merge tag 'pwm/for-5.7-rc1' of ↵Linus Torvalds2020-04-1014-233/+518
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "There's quite a few changes this time around. Most of these are fixes and cleanups, but there's also new chip support for some drivers and a bit of rework" * tag 'pwm/for-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (33 commits) pwm: pca9685: Fix PWM/GPIO inter-operation pwm: Make pwm_apply_state_debug() static pwm: meson: Remove redundant assignment to variable fin_freq pwm: jz4740: Allow selection of PWM channels 0 and 1 pwm: jz4740: Obtain regmap from parent node pwm: jz4740: Improve algorithm of clock calculation pwm: jz4740: Use clocks from TCU driver pwm: sun4i: Remove redundant needs_delay pwm: omap-dmtimer: Implement .apply callback pwm: omap-dmtimer: Do not disable PWM before changing period/duty_cycle pwm: omap-dmtimer: Fix PWM enabling sequence pwm: omap-dmtimer: Update description for PWM OMAP DM timer pwm: omap-dmtimer: Drop unused header file pwm: renesas-tpu: Drop confusing registered message pwm: renesas-tpu: Fix late Runtime PM enablement pwm: rcar: Fix late Runtime PM enablement dt-bindings: pwm: renesas-tpu: Document more R-Car Gen2 support pwm: meson: Fix confusing indentation pwm: pca9685: Use gpio core provided macro GPIO_LINE_DIRECTION_OUT pwm: pca9685: Replace CONFIG_PM with __maybe_unused ...
| * | | | pwm: pca9685: Fix PWM/GPIO inter-operationSven Van Asbroeck2020-04-031-37/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver allows pwms to be requested as gpios via gpiolib. Obviously, it should not be allowed to request a GPIO when its corresponding PWM is already requested (and vice versa). So it requires some exclusion code. Given that the PWMm and GPIO cores are not synchronized with respect to each other, this exclusion code will also require proper synchronization. Such a mechanism was in place, but was inadvertently removed by Uwe's clean-up in commit e926b12c611c ("pwm: Clear chip_data in pwm_put()"). Upon revisiting the synchronization mechanism, we found that theoretically, it could allow two threads to successfully request conflicting PWMs/GPIOs. Replace with a bitmap which tracks PWMs in-use, plus a mutex. As long as PWM and GPIO's respective request/free functions modify the in-use bitmap while holding the mutex, proper synchronization will be guaranteed. Reported-by: YueHaibing <yuehaibing@huawei.com> Fixes: e926b12c611c ("pwm: Clear chip_data in pwm_put()") Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: YueHaibing <yuehaibing@huawei.com> Link: https://lkml.org/lkml/2019/5/31/963 Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> [cg: Tested on an i.MX6Q board with two NXP PCA9685 chips] Tested-by: Clemens Gruber <clemens.gruber@pqgruber.com> Reviewed-by: Sven Van Asbroeck <TheSven73@gmail.com> # cg's rebase Link: https://lore.kernel.org/lkml/20200330160238.GD2817345@ulmo/ Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: Make pwm_apply_state_debug() staticJason Yan2020-04-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following gcc warning: drivers/pwm/core.c:467:6: warning: symbol 'pwm_apply_state_debug' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Jason Yan <yanaijie@huawei.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: meson: Remove redundant assignment to variable fin_freqColin Ian King2020-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The variable fin_freq is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: jz4740: Allow selection of PWM channels 0 and 1Paul Cercueil2020-03-301-5/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The TCU channels 0 and 1 were previously reserved for system tasks, and thus unavailable for PWM. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: jz4740: Obtain regmap from parent nodePaul Cercueil2020-03-302-24/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The TCU registers are shared between a handful of drivers, accessing them through the same regmap. While this driver is devicetree-compatible, it is never (as of now) probed from devicetree, so this change does not introduce a ABI problem with current devicetree files. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: jz4740: Improve algorithm of clock calculationPaul Cercueil2020-03-301-15/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous algorithm hardcoded details about how the TCU clocks work. The new algorithm will use clk_round_rate to find the perfect clock rate for the PWM channel. This code relies on the fact that clk_round_rate() will always round down, which is not a valid assumption given by the clk API, but only happens to be true with the clk drivers used for Ingenic SoCs. Right now, there is no alternative as the clk API does not have a round-down function (and won't have one for a while), but if it ever comes to light, a round-down function should be used instead. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: jz4740: Use clocks from TCU driverPaul Cercueil2020-03-302-14/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ingenic-timer "TCU" driver provides us with clocks, that can be (un)gated, reparented or reclocked from devicetree, instead of having these settings hardcoded in this driver. The new code now uses a clk pointer per PWM (instead of a clk per pwm-chip before). So the pointer is stored in per-pwm data now. The calls to arch-specific timer code is replaced with standard clock API calls to start and stop each channel's clock. While this driver is devicetree-compatible, it is never (as of now) probed from devicetree, so this change does not introduce a ABI problem with current devicetree files. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: sun4i: Remove redundant needs_delayPascal Roeleven2020-03-301-11/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'needs_delay' does now always evaluate to true, so remove all occurrences. Signed-off-by: Pascal Roeleven <dev@pascalroeleven.nl> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: omap-dmtimer: Implement .apply callbackLokesh Vutla2020-03-301-51/+129
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement .apply callback and drop the legacy callbacks(enable, disable, config, set_polarity). In .apply() check for the current hardware status before changing the PWM configuration. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: omap-dmtimer: Do not disable PWM before changing period/duty_cycleLokesh Vutla2020-03-301-14/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Only the Timer control register(TCLR) cannot be updated when the timer is running. Registers like Counter register (TCRR), loader register (TLDR) and match register (TMAR) can be updated while the counter is running. Since TCLR is not updated in pwm_omap_dmtimer_config(), do not stop the timer for period/duty_cycle update. Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: omap-dmtimer: Fix PWM enabling sequenceLokesh Vutla2020-03-301-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To configure DM timer in PWM mode the following needs to be set in OMAP_TIMER_CTRL_REG using set_pwm callback: - Set toggle mode on PORTIMERPWM output pin - Set trigger on overflow and match on PORTIMERPWM output pin. - Set auto reload This is a one time configuration and needs to be set before the start of the DM timer. But the current driver tries to set the same configuration for every period/duty cycle update, which is not needed. So move the PWM setup before enabling timer and do not update it in pwm_omap_dmtimer_config(). Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: omap-dmtimer: Update description for PWM OMAP DM timerLokesh Vutla2020-03-301-1/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the description with a brief about how PWM is generated using OMAP DM timer and add limitations for the PWM generations. Also add a link to the reference manual. Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: omap-dmtimer: Drop unused header fileLokesh Vutla2020-03-301-11/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pwm_omap_dmtimer.h is used only: - to typedef struct omap_dm_timer to pwm_omap_dmtimer - for macro PWM_OMAP_DMTIMER_TRIGGER_OVERFLOW_AND_COMPARE Rest of the file is pretty mush unsed. So reuse omap_dm_timer and OMAP_TIMER_TRIGGER_OVERFLOW_AND_COMPARE in pwm-omap-dmtimer.c and delete the header file. Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: renesas-tpu: Drop confusing registered messageGeert Uytterhoeven2020-03-301-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During device probe, the message TPU PWM -1 registered is printed. While the "-1" looks suspicious, it is perfectly normal for a device instantiated from DT. Remove the message, as there are no non-DT users left, and other drivers don't print such messages either. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: renesas-tpu: Fix late Runtime PM enablementGeert Uytterhoeven2020-03-301-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Runtime PM should be enabled before calling pwmchip_add(), as PWM users can appear immediately after the PWM chip has been added. Likewise, Runtime PM should always be disabled after the removal of the PWM chip, even if the latter failed. Fixes: 99b82abb0a35b073 ("pwm: Add Renesas TPU PWM driver") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: rcar: Fix late Runtime PM enablementGeert Uytterhoeven2020-03-301-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Runtime PM should be enabled before calling pwmchip_add(), as PWM users can appear immediately after the PWM chip has been added. Likewise, Runtime PM should be disabled after the removal of the PWM chip. Fixes: ed6c1476bf7f16d5 ("pwm: Add support for R-Car PWM Timer") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: meson: Fix confusing indentationKrzysztof Kozlowski2020-03-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix indentation of return block. Smatch warning: drivers/pwm/pwm-meson.c:139 meson_pwm_request() warn: inconsistent indenting Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Fixes: 211ed630753d ("pwm: Add support for Meson PWM Controller") Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: pca9685: Use gpio core provided macro GPIO_LINE_DIRECTION_OUTRishi Gupta2020-03-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GPIO core recently added macro to uniformly specify direction of a GPIO line, so use it. Signed-off-by: Rishi Gupta <gupt21@gmail.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: pca9685: Replace CONFIG_PM with __maybe_unusedRishi Gupta2020-03-301-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The __maybe_unused attribute is preferred over CONFIG_PM to prevent potential build time issues. This commit replaces CONFIG_PM with this attribute. Signed-off-by: Rishi Gupta <gupt21@gmail.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: tegra: Add support for Tegra194Sandipan Patra2020-03-301-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tegra194 has multiple PWM controllers with each having only one output. Also the maxmimum frequency is higher than earlier SoCs. Add support for Tegra194 and specify the number of PWM outputs and maximum supported frequency using device tree match data. Signed-off-by: Sandipan Patra <spatra@nvidia.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: Enable compile testing for some of driversKrzysztof Kozlowski2020-03-301-22/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some of the PWM drivers can be compile tested to increase build coverage. The Meson PWM driver requires COMMON_CLK dependency. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Florian Fainelli <f.fainelli@gmail.com> # For Broadcoam Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> # For Meson Acked-by: Claudiu Beznea <claudiu.beznea@microchip.com> # For Atmel Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-30 17:37:48 +0100