kernel/linux.git/include/linux/reset.h, branch v6.19.11

reset: fix BIT macro reference

2025-11-18T16:52:54+00:00

RESET_CONTROL_FLAGS_BIT_* macros use BIT(), but reset.h does not include bits.h. This causes compilation errors when including reset.h standalone. Include bits.h to make reset.h self-contained. Suggested-by: Troy Mitchell Reviewed-by: Troy Mitchell Reviewed-by: Philipp Zabel Signed-off-by: Encrow Thorne Signed-off-by: Philipp Zabel

reset: Add devm_reset_control_array_get_exclusive_released()

2025-05-05T13:16:50+00:00

Add the released variant of devm_reset_control_array_get_exclusive(). Needed by spi-smt32-ospi driver as same reset line is ulso used by stm32-omm driver. Signed-off-by: Patrice Chotard Reviewed-by: Philipp Zabel Link: https://lore.kernel.org/r/20250411-b4-upstream_ospi_reset_update-v2-1-4de7f5dd2a91@foss.st.com Signed-off-by: Philipp Zabel

reset: Add devres helpers to request pre-deasserted reset controls

2024-10-01T15:39:53+00:00

Add devres helpers - devm_reset_control_bulk_get_exclusive_deasserted - devm_reset_control_bulk_get_optional_exclusive_deasserted - devm_reset_control_bulk_get_optional_shared_deasserted - devm_reset_control_bulk_get_shared_deasserted - devm_reset_control_get_exclusive_deasserted - devm_reset_control_get_optional_exclusive_deasserted - devm_reset_control_get_optional_shared_deasserted - devm_reset_control_get_shared_deasserted to request and immediately deassert reset controls. During cleanup, reset_control_assert() will be called automatically on the returned reset controls. Acked-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20240925-reset-get-deasserted-v2-2-b3601bbd0458@pengutronix.de Signed-off-by: Philipp Zabel

reset: replace boolean parameters with flags parameter

2024-10-01T15:39:53+00:00

Introduce enum reset_control_flags and replace the list of boolean parameters to the internal reset_control_get functions with a single flags parameter, before adding more boolean options. The separate boolean parameters have been shown to be error prone in the past. See for example commit a57f68ddc886 ("reset: Fix devm bulk optional exclusive control getter"). Acked-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20240925-reset-get-deasserted-v2-1-b3601bbd0458@pengutronix.de Signed-off-by: Philipp Zabel

reset: Fix devm bulk optional exclusive control getter

2022-06-29T13:56:20+00:00

Most likely due to copy-paste mistake the device managed version of the denoted reset control getter has been implemented with invalid semantic, which can be immediately spotted by having "WARN_ON(shared && acquired)" warning in the system log as soon as the method is called. Anyway let's fix it by altering the boolean arguments passed to the __devm_reset_control_bulk_get() method from - shared = true, optional = false, acquired = true to + shared = false, optional = true, acquired = true That's what they were supposed to be in the first place (see the non-devm version of the same method: reset_control_bulk_get_optional_exclusive()). Fixes: 48d71395896d ("reset: Add reset_control_bulk API") Signed-off-by: Serge Semin Reviewed-by: Dmitry Osipenko Signed-off-by: Philipp Zabel Link: https://lore.kernel.org/r/20220624141853.7417-2-Sergey.Semin@baikalelectronics.ru

reset: Add of_reset_control_get_optional_exclusive()

2021-11-19T11:23:45+00:00

Add optional variant of of_reset_control_get_exclusive(). If the requested reset is not specified in the device tree, this function returns NULL instead of an error. Suggested-by: Philipp Zabel Signed-off-by: Biju Das Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20211112184413.4391-2-biju.das.jz@bp.renesas.com Signed-off-by: Philipp Zabel

Merge tag 'pci-v5.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2021-05-05T20:24:11+00:00

Pull pci updates from Bjorn Helgaas: "Enumeration: - Release OF node when pci_scan_device() fails (Dmitry Baryshkov) - Add pci_disable_parity() (Bjorn Helgaas) - Disable Mellanox Tavor parity reporting (Heiner Kallweit) - Disable N2100 r8169 parity reporting (Heiner Kallweit) - Fix RCiEP device to RCEC association (Qiuxu Zhuo) - Convert sysfs "config", "rom", "reset", "label", "index", "acpi_index" to static attributes to help fix races in device enumeration (Krzysztof Wilczyński) - Convert sysfs "vpd" to static attribute (Heiner Kallweit, Krzysztof Wilczyński) - Use sysfs_emit() in "show" functions (Krzysztof Wilczyński) - Remove unused alloc_pci_root_info() return value (Krzysztof Wilczyński) PCI device hotplug: - Fix acpiphp reference count leak (Feilong Lin) Power management: - Fix acpi_pci_set_power_state() debug message (Rafael J. Wysocki) - Fix runtime PM imbalance (Dinghao Liu) Virtualization: - Increase delay after FLR to work around Intel DC P4510 NVMe erratum (Raphael Norwitz) MSI: - Convert rcar, tegra, xilinx to MSI domains (Marc Zyngier) - For rcar, xilinx, use controller address as MSI doorbell (Marc Zyngier) - Remove unused hv msi_controller struct (Marc Zyngier) - Remove unused PCI core msi_controller support (Marc Zyngier) - Remove struct msi_controller altogether (Marc Zyngier) - Remove unused default_teardown_msi_irqs() (Marc Zyngier) - Let host bridges declare their reliance on MSI domains (Marc Zyngier) - Make pci_host_common_probe() declare its reliance on MSI domains (Marc Zyngier) - Advertise mediatek lack of built-in MSI handling (Thomas Gleixner) - Document ways of ending up with NO_MSI (Marc Zyngier) - Refactor HT advertising of NO_MSI flag (Marc Zyngier) VPD: - Remove obsolete Broadcom NIC VPD length-limiting quirk (Heiner Kallweit) - Remove sysfs VPD size checking dead code (Heiner Kallweit) - Convert VPF sysfs file to static attribute (Heiner Kallweit) - Remove unnecessary pci_set_vpd_size() (Heiner Kallweit) - Tone down "missing VPD" message (Heiner Kallweit) Endpoint framework: - Fix NULL pointer dereference when epc_features not implemented (Shradha Todi) - Add missing destroy_workqueue() in endpoint test (Yang Yingliang) Amazon Annapurna Labs PCIe controller driver: - Fix compile testing without CONFIG_PCI_ECAM (Arnd Bergmann) - Fix "no symbols" warnings when compile testing with CONFIG_TRIM_UNUSED_KSYMS (Arnd Bergmann) APM X-Gene PCIe controller driver: - Fix cfg resource mapping regression (Dejin Zheng) Broadcom iProc PCIe controller driver: - Return zero for success of iproc_msi_irq_domain_alloc() (Pali Rohár) Broadcom STB PCIe controller driver: - Add reset_control_rearm() stub for !CONFIG_RESET_CONTROLLER (Jim Quinlan) - Fix use of BCM7216 reset controller (Jim Quinlan) - Use reset/rearm for Broadcom STB pulse reset instead of deassert/assert (Jim Quinlan) - Fix brcm_pcie_probe() error return for unsupported revision (Wei Yongjun) Cavium ThunderX PCIe controller driver: - Fix compile testing (Arnd Bergmann) - Fix "no symbols" warnings when compile testing with CONFIG_TRIM_UNUSED_KSYMS (Arnd Bergmann) Freescale Layerscape PCIe controller driver: - Fix ls_pcie_ep_probe() syntax error (comma for semicolon) (Krzysztof Wilczyński) - Remove layerscape-gen4 dependencies on OF and ARM64, add dependency on ARCH_LAYERSCAPE (Geert Uytterhoeven) HiSilicon HIP PCIe controller driver: - Remove obsolete HiSilicon PCIe DT description (Dongdong Liu) Intel Gateway PCIe controller driver: - Remove unused pcie_app_rd() (Jiapeng Chong) Intel VMD host bridge driver: - Program IRTE with Requester ID of VMD endpoint, not child device (Jon Derrick) - Disable VMD MSI-X remapping when possible so children can use more MSI-X vectors (Jon Derrick) MediaTek PCIe controller driver: - Configure FC and FTS for functions other than 0 (Ryder Lee) - Add YAML schema for MediaTek (Jianjun Wang) - Export pci_pio_to_address() for module use (Jianjun Wang) - Add MediaTek MT8192 PCIe controller driver (Jianjun Wang) - Add MediaTek MT8192 INTx support (Jianjun Wang) - Add MediaTek MT8192 MSI support (Jianjun Wang) - Add MediaTek MT8192 system power management support (Jianjun Wang) - Add missing MODULE_DEVICE_TABLE (Qiheng Lin) Microchip PolarFlare PCIe controller driver: - Make several symbols static (Wei Yongjun) NVIDIA Tegra PCIe controller driver: - Add MCFG quirks for Tegra194 ECAM errata (Vidya Sagar) - Make several symbols const (Rikard Falkeborn) - Fix Kconfig host/endpoint typo (Wesley Sheng) SiFive FU740 PCIe controller driver: - Add pcie_aux clock to prci driver (Greentime Hu) - Use reset-simple in prci driver for PCIe (Greentime Hu) - Add SiFive FU740 PCIe host controller driver and DT binding (Paul Walmsley, Greentime Hu) Synopsys DesignWare PCIe controller driver: - Move MSI Receiver init to dw_pcie_host_init() so it is re-initialized along with the RC in resume (Jisheng Zhang) - Move iATU detection earlier to fix regression (Hou Zhiqiang) TI J721E PCIe driver: - Add DT binding and TI j721e support for refclk to PCIe connector (Kishon Vijay Abraham I) - Add host mode and endpoint mode DT bindings for TI AM64 SoC (Kishon Vijay Abraham I) TI Keystone PCIe controller driver: - Use generic config accessors for TI AM65x (K3) to fix regression (Kishon Vijay Abraham I) Xilinx NWL PCIe controller driver: - Add support for coherent PCIe DMA traffic using CCI (Bharat Kumar Gogada) - Add optional "dma-coherent" DT property (Bharat Kumar Gogada) Miscellaneous: - Fix kernel-doc warnings (Krzysztof Wilczyński) - Remove unused MicroGate SyncLink device IDs (Jiri Slaby) - Remove redundant dev_err() for devm_ioremap_resource() failure (Chen Hui) - Remove redundant initialization (Colin Ian King) - Drop redundant dev_err() for platform_get_irq() errors (Krzysztof Wilczyński)" * tag 'pci-v5.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (98 commits) riscv: dts: Add PCIe support for the SiFive FU740-C000 SoC PCI: fu740: Add SiFive FU740 PCIe host controller driver dt-bindings: PCI: Add SiFive FU740 PCIe host controller MAINTAINERS: Add maintainers for SiFive FU740 PCIe driver clk: sifive: Use reset-simple in prci driver for PCIe driver clk: sifive: Add pcie_aux clock in prci driver for PCIe driver PCI: brcmstb: Use reset/rearm instead of deassert/assert ata: ahci_brcm: Fix use of BCM7216 reset controller reset: add missing empty function reset_control_rearm() PCI: Allow VPD access for QLogic ISP2722 PCI/VPD: Add helper pci_get_func0_dev() PCI/VPD: Remove pci_vpd_find_tag() SRDT handling PCI/VPD: Remove pci_vpd_find_tag() 'offset' argument PCI/VPD: Change pci_vpd_init() return type to void PCI/VPD: Make missing VPD message less alarming PCI/VPD: Remove pci_set_vpd_size() x86/PCI: Remove unused alloc_pci_root_info() return value MAINTAINERS: Add Jianjun Wang as MediaTek PCI co-maintainer PCI: mediatek-gen3: Add system PM support PCI: mediatek-gen3: Add MSI support ...

reset: add missing empty function reset_control_rearm()

2021-05-03T18:09:30+00:00

All other functions are defined for when CONFIG_RESET_CONTROLLER is not set. Fixes: 557acb3d2cd9 ("reset: make shared pulsed reset controls re-triggerable") Link: https://lore.kernel.org/r/20210430152156.21162-2-jim2101024@gmail.com Signed-off-by: Jim Quinlan Signed-off-by: Bjorn Helgaas Cc: stable@vger.kernel.org # v5.11+

reset: Add reset_control_bulk API

2021-03-18T13:49:33+00:00

Follow the clock and regulator subsystems' lead and add a bulk API for reset controls. Signed-off-by: Philipp Zabel Tested-by: Dmitry Osipenko Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20210314154459.15375-5-digetx@gmail.com Signed-off-by: Mark Brown

reset: Add devm_reset_control_get_optional_exclusive_released()

2021-01-25T16:32:10+00:00

NVIDIA Tegra DRM and media drivers will need a resource-managed-optional variant of reset_control_get_exclusive_released() in order to switch away from a legacy Tegra-specific PD API to a GENPD API without much hassle. Add the new reset helper to the reset API. Tested-by: Peter Geis # Ouya T30 Tested-by: Nicolas Chauvet # PAZ00 T20 Tested-by: Matt Merhar # Ouya T30 Signed-off-by: Dmitry Osipenko Signed-off-by: Philipp Zabel