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git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Set supported_speeds in set_pcie_port_type() so sparc64 and
powerpc, which call it via of_create_pci_dev() instead of the usual
pci_setup_device(), correctly set the supported PCIe link speeds
(Stian Halseth)
- When pcie_set_mps() changes MPS, update the value in the saved
state so a subsequent restore doesn't restore an invalid value
(Niklas Cassel)
- Skip Target Speed quirk on clamped ports with no link (Maciej W.
Rozycki)
Driver binding:
- Assume control of portdrv-related features only when portdrv is
enabled, since we can't use them without portdrv (Kuppuswamy
Sathyanarayanan)
- Centralize feature ownership checking so code only needs to check
'host->native_X' and doesn't need to also check 'pcie_ports_native'
(Kuppuswamy Sathyanarayanan)
Error handling:
- Fix leaks when ACPI APEI/GHES error events overflow the kfifo or
mention a device that no longer exists (Priyank Rathod)
- Fix aer_process_err_devices() leak when a device is recorded as an
error source purely by being mentioned in the Root Port Error
Source and the device is inaccessible or logged only masked errors
(Priyank Rathod)
ASPM:
- Disable ASPM when drivers request that, even if the OS doesn't own
ASPM; otherwise drivers do it on their own, which is worse (Ilpo
Järvinen)
Power management:
- Align hibernate poweroff flow with suspend flow for bridges so they
can be powered down at hibernate as they are for suspend (Mario
Limonciello)
- Restore BARs after powering up during enumeration to fix a
regression on devices that don't preserve state in D3hot (Keng-Yu
Lin)
- Avoid D3 on PLX PEX 8532/8533/8548 downstream ports, where putting
them in D3hot takes down the whole switch (Imre Kaloz)
Power control:
- Add GPIO driver for Toshiba TC9563 embedded GPIO controller (Alex
Elder)
- Add DT documentation and pwrctrl driver support for TC9563 embedded
GPIO controller (Lorenzo Bianconi)
- Switch the tc9563 per-port reset to use the GPIO descriptor API
instead of direct regmap accesses (Lorenzo Bianconi)
- Only destroy devices created by pwrctrl core, so that when removing
a PCIe controller driver that uses pwrctrl, we don't remove devices
populated by another mechanism (Shawn Lin)
- Power off child devices on power-on failure (Lorenzo Bianconi)
PCIe native device hotplug:
- Make the 'pciehp_poll_mode' parameter read-only to prevent changes
via sysfs, which can cause errors when unbinding (Runyu Xiao)
Virtualization:
- Read SR-IOV VF Revision ID and Subsystem ID from VF instead of
assuming they're the same as VF 0; they may differ (Logan Odell)
- Add ACS quirk for Pericom PI7C9X2G304 switches (Hans de Goede)
Peer-to-peer DMA:
- Add Zhaoxin KX-6000, KH-40000, KX-6000G, KX-7000, and KH-50000 host
bridges to allowlist (LeoLiu-oc)
- Add Alibaba T-HEAD Yitian 710 host bridge to allowlist (Feng Tang)
- Add Intel Haswell client host bridge to allowlist (Scott Lee)
- Intel Xeon E3/E5/E7 0x6f00 host bridge to allowlist (kai zhang)
- Fix handling of errors in pci_p2pdma_add_resource() to avoid (a)
unmapping a BAR if registering another fails and (b) use after free
of p2p_pgmap (Leon Romanovsky)
- Wait for RCU readers before freeing state to avoid use-after-free
of pdev->p2pdma (Leon Romanovsky)
- Restrict pci_p2pmem_find_many() to providers backed by a pool (Leon
Romanovsky)
- Safely terminate ACS redirect lists to avoid out-of-bounds access
to the buffer (Leon Romanovsky)
- Silence 'Host bridge not in P2PDMA whitelist' warnings unless
caller, e.g., pci_p2pmem_find_many(), requests 'verbose' (Leon
Romanovsky)
Sysfs:
- Return -ENODEV or -EIO sysfs 'label' or 'acpi_index' attributes
when Device Name _DSM fails, not -1, which is interpreted as -EPERM
(Krzysztof Wilczyński)
- Return valid sysfs 'acpi_index' attribute even if the Device Name
_DSM returned an invalid 'label' (Krzysztof Wilczyński)
- Expose sysfs 'acpi_index' and 'label' based on whether the Device
Name _DSM returns valid data, not merely whether the _DSM is
implemented (Krzysztof Wilczyński)
- Avoid out-of-bounds reads of the label returned by the Device Name
_DSM, which is in UTF-16 characters, not bytes (Krzysztof
Wilczyński)
- Reject unaligned resource I/O port accesses, which can oops on
arm64 (Deepanshu Kartikey)
Endpoint framework:
- Pass the correct physical and virtual endpoint function numbers
when setting translation of inbound memory windows (Koichiro Den)
- Make embedded doorbell IRQ non-shared, since currently only the
first EPF can allocate doorbells (Koichiro Den)
- MSI doorbells currently target the first EPF attached to an EPC;
let other EPFs try the embedded doorbell instead of failing when
they can't use the MSI doorbell (Koichiro Den)
- Serialize scan of vNTB virtual PCI bus with other PCI topology
changes (Koichiro Den)
- Manage vNTB lifetimes to avoid leaking virtual devices and buses
and allow removal (Koichiro Den)
- Track vNTB link state from both sides so both see the same
effective link state (Koichiro Den)
- Configure vNTB MSI-X when supported to avoid IOMMU faults and
failure to deliver doorbell interrupts on RC (Koichiro Den)
APM X-Gene PCIe controller driver:
- Use devm for clocks so they're automatically disabled, unprepared,
and released if errors happen during probe (Yuho Choi)
ASPEED PCIe controller driver:
- Fix clk and PHY leaks in aspeed_pcie_port_init() error paths (Liu
Zhenlong)
Broadcom iProc PCIe controller driver:
- Expose devm_pci_alloc_host_bridge_release() so drivers can share a
devm release function even if they don't need the device tree
parsing done by devm_pci_alloc_host_bridge() (Bjorn Helgaas)
- Request only the memory window from BCMA Enumeration ROM and warn
if it doesn't match the one in DT, which fixes an iproc-bcma probe
failure (Semih Baskan)
Broadcom STB PCIe controller driver:
- Replace bool properties for each SoC configuration with a u32
bitvector and a BFLAG() helper (Jim Quinlan)
- Use a similar BQUIRK() helper to test various SoC quirks (Jim
Quinlan)
Cadence PCIe controller driver:
- Remove device links to PHY, which are redundant because the PHY
core itself adds them (Vladimir Oltean)
- Return error (not success) from cdns_plat_pcie_probe() if
pm_runtime_get_sync() or cdns_pcie_ep_setup() failed (Vladimir
Oltean)
- Correct the driver data pointer usage; previously .probe() stored
'struct cdns_plat_pcie *', but .shutdown() used the pointer as
'struct cdns_pcie *', resulting in accessing garbage (Linmao Li)
ESWIN PCIe controller driver:
- Publish the platform driver MODULE_DEVICE_TABLE so the driver can
be autoloaded when built as a module (Pengpeng Hou)
Freescale i.MX6 PCIe controller driver:
- Fix resource and pwrctrl device leaks .probe() (Zhijian Han)
- Improve i.MX95 Gen3 link stability by changing MPLLB_BANDWIDTH from
default 120 to 140 (Richard Zhu)
- Use dev_err_probe() in host init error path to silence
-EPROBE_DEFER messages (Alexander Stein)
- Avoid dereferencing NULL clock names when 'clocks' includes more
phandles than 'clock-names' has names (Rudi Heitbaum)
- Add suspend_poweroff flag so platforms like i.MX that power off RC
controllers during suspend can enter L2 so endpoints can get
PME_Turn_Off notifications before power loss (Richard Zhu)
Freescale Layerscape PCIe controller driver:
- Enable PROBE_PREFER_ASYNCHRONOUS to reduce probe time of the four
controllers on LX2160A (Vincent Jardin)
Intel VMD host bridge driver:
- Flush DMA writes before handling MSI on Meteor Lake: MSI may arrive
before write has completed, resulting in an nvme 30 second stall
before a QID timeout and possibly other similar problems (Rickey
Bartlett)
- Flush DMA writes before handling MSI on Arrow Lake (Vladimir
Nedoshivin)
Marvell Aardvark PCIe controller driver:
- Disable PHY on probe failures (Myeonghun Pak)
Marvell MVEBU PCIe controller driver:
- Refcount child OF nodes during .probe() to make a concurrent OF
overlay removal safe (Krzysztof Kozlowski)
MediaTek PCIe controller driver:
- Find INTx DT property by 'interrupt-controller' name instead of
assuming it's the first child node (Zhengping Zhang)
MediaTek PCIe Gen3 controller driver:
- Fix a 64-bit type truncation in mtk_pcie_set_trans_table() to avoid
issues with windows above or larger than 4GB (Sreeraj S Kurup)
NVIDIA Tegra264 PCIe controller driver:
- Fix the Link Capabilities offset so we read the correct register
(Bjorn Helgaas)
Qualcomm PCIe controller driver:
- Only collect reset GPIOs from PCI bridge DT nodes to avoid stealing
resets used by downstream devices like USB controllers (Christopher
Obbard)
- Block accesses to downstream devices on link down to reduce a storm
of Completion Timeout AER interrupts (Qiang Yu)
- Skip system suspend/resume for firmware-managed PCIe, where
firmware manages clocks, regulators, resets, etc (Mrinmay Sarkar)
- Honor IOMMU provider's #iommu-cells in qcom_pcie_config_sid_1_9_0()
(Manivannan Sadhasivam)
- Deinitialize endpoint on remove (Guangshuo Li)
- Treat Root Port error recovery as successful even if link doesn't
come up after reset because the device was hot-unplugged (Konrad
Dybcio)
- Skip unnecessary iMSI-RX initialization if DT 'msi-map' is present,
indicating an external MSI controller (Ayiluri Naga Rashmi)
Renesas R-Car PCIe controller driver:
- Limit Max_Read_Request_Size to 256 to avoid hardware erratum (Marek
Vasut)
- Support PERST# via reset subsystem as well as the existing GPIO
support to prepare for R-Car Gen5 SoCs (Marek Vasut)
- Add DT and driver support for the R-Car Gen 5 X5H (R8A78000) PCIe
Gen 4 core (Marek Vasut)
- Add Application/Local register reset DT description and driver
support for both host and endpoint mode (Marek Vasut)
- Add PM ops so controller works after suspend/resume (Marek Vasut)
Renesas RZ/G3S PCIe controller driver:
- Disable refclk on probe failure (Lad Prabhakar)
- Propagate platform_get_irq_byname() errors so probe deferral works
correctly (Lad Prabhakar)
- Tear down INTx handlers if subsequent initialization fails (Lad
Prabhakar)
- Add RZ/G3L (R9A08G046) DT and driver support (Biju Das)
Rockchip PCIe controller driver:
- Limit host and endpoint controllers to 2.5 GT/s since 5.0 GT/s is
unsafe per Rockchip (Geraldo Nascimento)
Synopsys DesignWare PCIe controller driver:
- Set DMA_BYPASS bit in outbound IATU CTRL2 register to avoid data
corruption if the iATU translates DMA engine transactions (Sumit
Kumar)
- Use FIELD_PREP() to remove need for *_SHIFT definitions (Hans
Zhang)
TI DRA7xx PCIe controller driver:
- Remove device links to PHY, which are redundant because the PHY
core itself adds them (Vladimir Oltean)
- Fix optional clock leak when .probe() fails by using
devm_clk_get_optional_enabled() (Felix Gu)
TI Keystone PCIe controller driver:
- Remove device links to PHY, which are redundant because the PHY
core itself adds them (Vladimir Oltean)
UltraRISC PCIe controller driver:
- Allow DWC drivers to skip outbound iATU setup if they don't need
translation between CPU and PCI addresses (Xincheng Zhang)
- Skip MEM outbound iATU setup on DP1000 (Xincheng Zhang)
Xilinx Versal CPM PCIe controller driver:
- Add DT and driver support for optional PERST# for use in warm reset
scenarios (Sai Krishna Musham)
Xilinx XDMA PCIe controller driver:
- Fix device node reference leak in xilinx_pl_dma_pcie_init_irq_domain()
(Wentao Liang)"
* tag 'pci-v7.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (139 commits)
PCI/pwrctrl: Power off child devices on power-on failure
PCI/pwrctrl: Only destroy devices created by pwrctrl core
PCI/pwrctrl: generic: Fix leaking array from of_regulator_bulk_get_all()
PCI/pwrctrl: tc9563: Switch per-port reset to GPIO descriptor API
PCI/pwrctrl: tc9563: Add GPIO auxiliary device support
dt-bindings: PCI: toshiba,tc9563: Document embedded GPIO controller
gpio: tc9563: Add support for the embedded GPIO controller
PCI: qcom: Skip DWC MSI host initialization when DT 'msi-map' is present
PCI: qcom: Ignore -ENODEV after Root Port reset
PCI: qcom-ep: Deinitialize endpoint on remove
PCI/sysfs: Reject unaligned resource I/O port accesses
PCI: rcar-gen4: Add missing PM ops
PCI: endpoint: pci-epf-vntb: Honor MSI-X selection
PCI: endpoint: pci-epf-vntb: Use a local epf pointer in interrupt setup
PCI: dwc: imx6: Use regmap_assign_bits() for conditional set/clear
PCI: dwc: Describe DWC PCIe fields with full masks and FIELD_PREP()
PCI: dwc: Rename pp->irq_domain to pp->msi_irq_domain
PCI: dwc: Rename dw_pcie_allocate_domains() to dw_pcie_allocate_msi_domains()
PCI: dwc: Correct PCIE_DW_PLAT_EP reference in Kconfig help
PCI/ASPM: Disable ASPM when driver requests it
...
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Add a driver for the GPIO controller embedded in the Toshiba TC9563 PCIe
switch (and the Qualcomm QPS615). The device implements 37 GPIOs using two
register banks: three registers control the first 32 GPIOs and three more
control GPIOs 32-36. GPIOs 20 and 21 are reserved while GPIOs 22-24,
27-28, 31, and 34 are input-only.
Register the driver as an auxiliary device driver. The TC9563 power
controller creates the auxiliary device and provides a regmap that gives
access to the GPIO registers, so use the gpio-regmap helpers to implement
the GPIO chip.
Signed-off-by: Alex Elder <elder@riscstar.com>
Co-developed-by: Daniel Thompson <daniel@riscstar.com>
Signed-off-by: Daniel Thompson <daniel@riscstar.com>
Co-developed-by: Lorenzo Bianconi <lorenzo.bianconi@oss.qualcomm.com>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@oss.qualcomm.com>
[bhelgaas: commit log per https://lore.kernel.org/arQ2mDjqHv4gmoOK@lore-desk]
[bhelgaas: squash Geert Uytterhoeven <geert+renesas@glider.be> Kconfig fix:
https://lore.kernel.org/all/45484c37512a3102495d8b75b6e9f72a141ba42e.1792574560.git.geert+renesas@glider.be,
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Acked-by: Lorenzo Bianconi <lorenzo.bianconi@oss.qualcomm.com>]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260909-pci-tc9563-aux-v5-2-c9b33f56c8d3@oss.qualcomm.com
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Add support for the Axiado AX3005 SGPIO controller.
Each SGPIO position provides one input GPIO and one output GPIO with
fixed directions. The driver registers the controller as a gpio_chip,
supports interrupts on input GPIOs, and uses regmap for register access.
Signed-off-by: Petar Stepanovic <pstepanovic@axiado.com>
Link: https://patch.msgid.link/20260921-axiado-ax3000-sgpio-controller-v4-2-79c444be7faf@axiado.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into gpio/for-next
Immutable branch between MFD, Clk, GPIO, Regulator and RTC due for the
v7.4 merge window containing the ROHM BD73800 GPIO driver.
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The ROHM BD73800 PMIC has 4 pins (named GPIO1, CLKOUT, FAULT_B and
EXTEN_OUT) which might have been set to operate as a GPI or GPO when OTP
(One Time Programmable memory) is written at device manufacturing.
Support the GPI/GPO use-case via GPIO framework.
The default OTP for these pins is to not use any of them as GPI or GPO.
(The GPIO1 defaults as an ADC input regardless the naming). Hence the
driver assumes none of these pins is a GPI/GPO unless explicitly pointed
as GPI or GPO via device tree.
Furthermore, pin's direction can't be changed after OTP configuration is
done. Also the default drive type for a GPO (CMOS / Open Drain) is set
by the OTP configuration. The BD73800 has a set of undocumented test
registers which should allow changing the drive type. Access to the test
register area or the test registers aren't documented and so this driver
does not support configuring the drive type even though it might be
doable.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/e3e6ac712519326cc25fcdd0a0c8e3cc42ef55ab.1789538455.git.mazziesaccount@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
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The AD7768 provides five GPIOs controlled through registers shared
with the parent IIO device. Register an auxiliary gpio-regmap driver
and use the parent device for runtime PM.
The device has separate input-state and output-latch registers. Add a
reg_mask_xlate() callback that checks the line direction and reads the
programmed output latch for output lines while retaining input-state
reads for input lines.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Janani Sunil <janani.sunil@analog.com>
Link: https://patch.msgid.link/20260910-ad7768-gpio-v8-3-6aaaa15adeb3@analog.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"GPIO core:
- extend the gpio-regmap abstraction layer with more features
allowing users to override configuration setting, translate
register values and masks and enable/disable interrupts
- extend GPIO kunit tests with suites verifying probe ordering by
software node devlink support and software node hogs
- shrink GPIO kunit initialization code
- coding style updates (remove commas from sentinels where
applicable)
- with all users now converted treewide to using real firmware node
links for software node GPIO lookup: remove the deprecated
label-matching mechanism from from GPIO core
- drop redundant return value check of nonseekable_open() in
gpiolib-cdev
- use IRQ trigger helpers where applicable
Driver updates:
- refactor error paths and logging in gpio-nomadik
- use more modern interfaces for getting resources in gpio-rockchip,
gpio-bt8xx and gpio-pca9570
- add missing MODULE_DEVICE_TABLE() to gpio-sifive and gpio-vf610
- drop unused FILONOFF macro from gpio-rcar
- extend build coverage of ioport GPIO drivers with COMPILE_TEST=y
- only enable the gpio-rtd driver by default with ARCH_REALTEK=y to
avoid bloating the build
- refactor coding style in several drivers
- use correct endianess translation in gpio-pcf85x
- add wake-up interrupt support to gpio-mvebu
- apply initial value in direction output setter in gpio-by-pinctrl
Misc:
- replace linux/gpio.h inclusions treewide with linux/gpio/legacy.h
which now exports all the deprecated APIs
- select GPIOLIB_LEGACY in Kconfig where required treewide
- use software nodes for gpio-keys in MFD drivers
Devicetree bindings:
- describe the realtek rtd1625 GPIO controller
- document new models for gpio-pca95xx and gpio-cadence
- document new property in gpio-rockchip"
* tag 'gpio-updates-for-v7.3-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (61 commits)
gpio: gpio-by-pinctrl: Apply initial value in direction output wrapper
dt-bindings: gpio: rockchip,gpio-bank: Add rockchip,grf property
gpio: Use IRQ trigger mask helpers
gpio: allow COMPILE_TEST for IOPORT drivers
gpio: realtek: Add driver for Realtek DHC RTD1625 SoC
gpio: regmap: Add IRQ enable/disable helpers
gpio: regmap: Add set_config callback
gpio: regmap: Add value_xlate callback
gpio: regmap: Add gpio_regmap_operation to extend reg_mask_xlate callback
gpio: regmap: Order kernel-doc descriptions with the actual appearance
gpio: regmap: Apply default resource callbacks for regmap IRQ chip
gpio: regmap: Provide default IRQ resource request and release callbacks
Revert "gpio: realtek: Add driver for Realtek DHC RTD1625 SoC"
gpib: gpio: replace linux/gpio.h inclusion
Input: matrix_keyboard - replace linux/gpio.h inclusion
phy: replace linux/gpio.h inclusions
pcmcia: replace linux/gpio.h inclusions
ASoC: replace linux/gpio.h inclusions
mfd: replace linux/gpio.h inclusions
sh: replace linux/gpio.h inclusions
...
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These drivers are gated by X86 but they compile on non-x86 just fine.
Add COMPILE_TEST to the menu so that these drivers can use it if they
want.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260729211001.719606-1-rosenp@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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Replace PPC-specific clrbits32()/setbits32() with local helpers using
ioread32be()/iowrite32be() which are equivalent on PPC since commit
894fa235eb4c ("powerpc: inline iomap accessors").
Add COMPILE_TEST as a result to increase compile coverage.
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260803223539.86303-7-rosenp@gmail.com
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Move the ppc4xx gpio driver out of arch/powerpc/platforms/44x/ into
drivers/gpio/gpio-ppc44x.c. The driver has no architecture-specific
dependencies and follows the same pattern as other PowerPC GPIO
drivers already in drivers/gpio/ (e.g. gpio-mpc8xxx, gpio-mpc5200).
- Renamed Kconfig symbol from PPC4xx_GPIO to GPIO_PPC44X
- Updated ppc44x_defconfig and warp_defconfig to use the new symbol
- Marked the new option as tristate (was bool) since the driver
supports module build via module_platform_driver()
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260803223539.86303-2-rosenp@gmail.com
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Add support for the GPIO controller found on Realtek DHC RTD1625 SoCs.
Unlike the existing Realtek GPIO driver (drivers/gpio/gpio-rtd.c),
which manages pins via shared bank registers, the RTD1625 introduces
a per-pin register architecture. Each GPIO line now has its own
dedicated 32-bit control register to manage configuration independently,
including direction, output value, input value, interrupt enable, and
debounce. Therefore, this distinct hardware design requires a separate
driver.
The RTD1625 GPIO controller has a hardware quirk where both 'assert'
and 'de-assert' interrupts are fired simultaneously on any edge toggle.
The driver works around this quirk to correctly handle edge interrupts.
Interrupt support is optional for this device, matching the dt-bindings.
If the interrupts property is not provided, the driver simply skips IRQ
initialization and operates purely as a basic GPIO controller.
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Tzuyi Chang <tychang@realtek.com>
Co-developed-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Reviewed-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Link: https://patch.msgid.link/20260726125209.140307-10-eleanor.lin@realtek.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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This reverts commit a57e27c43b0315ee86c6896510d69be5257e093e.
The driver will be rewritten to use the gpio-regmap infrastructure
once Andy Shevchenko's patches for gpio-regmap are applied.
Acked-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Link: https://patch.msgid.link/20260726125209.140307-2-eleanor.lin@realtek.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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Add support for the GPIO controller found on Realtek DHC RTD1625 SoCs.
Unlike the existing Realtek GPIO driver (drivers/gpio/gpio-rtd.c),
which manages pins via shared bank registers, the RTD1625 introduces
a per-pin register architecture. Each GPIO line now has its own
dedicated 32-bit control register to manage configuration independently,
including direction, output value, input value, interrupt enable, and
debounce. Therefore, this distinct hardware design requires a separate
driver.
Additionally, the RTD1625 GPIO controller has a specific hardware quirk:
it fires both 'assert' and 'de-assert' interrupts simultaneously on any
edge toggle. To handle this, we utilize the polarity register to route
the requested edge (rising/falling) to the 'assert' IRQ line. The driver
then filters out the unwanted 'de-assert' interrupt in the IRQ handler
and pre-clears edge interrupts to prevent interrupt storms caused by
unhandled dropped interrupts.
Interrupt support is optional for this device, matching the dt-bindings.
If the interrupts property is not provided, the driver simply skips IRQ
initialization and operates purely as a basic GPIO controller.
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Tzuyi Chang <tychang@realtek.com>
Co-developed-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Link: https://patch.msgid.link/20260622092335.1166876-4-eleanor.lin@realtek.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
Replace "default y" with "default ARCH_REALTEK" to avoid bloating the build
for non-Realtek platforms when COMPILE_TEST is enabled on other platforms.
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Link: https://patch.msgid.link/20260622092335.1166876-3-eleanor.lin@realtek.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck:
"New drivers for the following chips:
- Analog Devices LTC4283 Swap Controller
- Analog Devices MAX20830
- Analog Devices MAX20860A
- ARCTIC Fan Controller
- Delta E50SN12051
- Luxshare LX1308
- Microchip EMC1812/13/14/15/33
- Monolithic MP2985
- Murata D1U74T PSU
New chip support added to existing drivers:
- asus-ec-sensors: Support for ROG MAXIMUS Z790 EXTREME, ROG STRIX
B850-E GAMING WIFI, and ROG STRIX B650E-E GAMING WIFI
- dell-smm: Add Dell Latitude 7530 to fan control whitelist
- nct6683: Support for ASRock Z890 Pro-A
- pmbus: Support for Flex BMR316, BMR321, BMR350 and BMR351
- pmbus/max34440: Support for ADPM12250
- pmbus/xdp720: Support for Infineon xdp730, and fix driver issues
reported by Sashiko
New functionality:
- Add support for update_interval_us chip attribute, and support it
in ina238 driver
- Add support for guard() and scoped_guard() for subsystem locks, and
use it in adt7411, ina2xx, and lm90 drivers
- emc2305: Support configurable fan PWM at shutdown
- lm63: Expose PWM frequency and LUT hysteresis as writable
- lm75: Support active-high alert polarity
- nct7802: Add time step attributes for tweaking responsiveness
- pmbus/adm1266: Add rtc debugfs entries for rtc, powerup_counter,
clear_blackbox, and firmware_revision
- raspberrypi: Fix delayed-work teardown race, add voltage input
support as well as voltage domain IDs
- mcp9982: Add support for reporting external diode faults
Miscellaneous bug fixes, changes and improvements:
- Use named initializers for platform_device_id arrays and
i2c_device_data, and remove unused driver data
- Various drivers: Move MODULE_DEVICE_TABLE next to the table itself
- ads7871: Convert to hwmon_device_register_with_info(), and use
DMA-safe buffer for SPI writes
- adt7411: document supported sysfs attributes
- adt7462: Add of_match_table to support devicetree
- adt7475: Add explicit header include
- coretemp; Fix outdated documentation, coding style issues, and
replace hardcoded core count with dynamic value
- cros_ec: Drop unused assignment of platform_device_id driver data
- emc2305: Fix fan channel index handling
- gpd-fan: Reject EC PWM value 0 as invalid, fix race condition
between device removal and sysfs access, upgrade log level from
warn to err for platform device creation failure, initialize EC
before registering hwmon device, drop global driver data and use
per-device allocation
- htu31: document debugfs serial_number
- ina238: Add support for samples and update_interval
- it87: Clamp negative values to zero in set_fan()
- lm75: Add explicit header include, Add explicit default cases in
lm75_is_visible(), and add section for sysfs interface to
documentation
- pmbus/lm25066: Fix PMBus coefficients for LM5064/5066/5066i
- tmp102: Use device_property_read_string API
- tmp401: Read "ti,n-factor" as signed
- Convert zyxel,nsa320-mcu to DT schema"
* tag 'hwmon-for-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (81 commits)
hwmon: tmp401: Read "ti,n-factor" as signed
hwmon: (pmbus/lm25066) Fix PMBus coefficients for LM5064/5066/5066i
hwmon: (gpd-fan) Reject EC PWM value 0 as invalid
hwmon: (dell-smm) Add Dell Latitude 7530 to fan control whitelist
hwmon: temperature: add support for EMC1812
dt-bindings: hwmon: temperature: add support for EMC1812
hwmon: (gpd-fan): fix race condition between device removal and sysfs access
hwmon: (gpd-fan): upgrade log level from warn to err for platform device creation failure
hwmon: (gpd-fan): Initialize EC before registering hwmon device
hwmon: (gpd-fan): drop global driver data and use per-device allocation
hwmon: (pmbus/max34440): add support adpm12250
hwmon: (ina238) Add update_interval_us attribute
hwmon: Add update_interval_us chip attribute
hwmon: (ina238) Add support for samples and update_interval
gpio: gpio-ltc4283: Add support for the LTC4283 Swap Controller
hwmon: ltc4283: Add support for the LTC4283 Swap Controller
dt-bindings: hwmon: Document the LTC4283 Swap Controller
hwmon: (pmbus/xdp720) Fix driver issues xdp720/730
hwmon: (pmbus/xdp720) Add support for efuse xdp730
dt-bindings: hwmon/pmbus: Add Infineon xdp730
...
|
|
The LTC4283 device has up to 8 pins that can be configured as GPIOs.
Note that PGIO pins are not set as GPIOs by default so if they are
configured to be used as GPIOs we need to make sure to initialize them
to a sane default. They are set as inputs by default.
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20260502-ltc4283-support-v13-3-1c206542e652@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
|
|
The ts5500 platform is no longer functional because it is
based on the removed AMD Élan i486 SoC. Remove the now
obsolete driver.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260526103424.3246915-1-arnd@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
Add a module containing kunit test cases for GPIO core. The idea is to
use it to test functionalities that can't easily be tested from
user-space with kernel selftests or GPIO character device test suites
provided by the libgpiod package.
For now add test cases that verify software node based lookup and ensure
that a GPIO provider unbinding with active consumers does not cause a
crash.
Reviewed-by: David Gow <david@davidgow.net>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260522-gpiolib-kunit-v3-3-b15fe6987430@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
The Airoha EN7523 GPIO driver uses generic platform, MMIO, and gpiolib
interfaces. Allow it to build with COMPILE_TEST so it gets coverage on
non-Airoha platforms.
Tested with:
make LLVM=1 ARCH=loongarch drivers/gpio/gpio-en7523.o
Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260519005912.628667-1-rosenp@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
The APM X-Gene GPIO driver uses generic platform, ACPI, MMIO, and gpiolib
interfaces. Allow it to build with COMPILE_TEST, matching the existing
coverage for the X-Gene standby GPIO driver.
Tested with:
make LLVM=1 ARCH=loongarch drivers/gpio/gpio-xgene.o
Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260519005958.628783-1-rosenp@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
The SPEAr SPI chip-select GPIO driver only depends on generic platform,
OF, and MMIO interfaces, so it can be built outside SPEAr platform
configurations.
Enable compile-test coverage to catch build regressions on other
architectures.
Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260510195531.10561-1-rosenp@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
The ZEVIO GPIO driver uses generic platform, MMIO, and gpiolib interfaces.
Allow it to build with COMPILE_TEST so it gets coverage on non-ARM
platforms.
Drop the ARM-specific IOMEM() casts around the register pointer. The
pointer is already __iomem, so readl() and writel() can use it directly.
Tested with:
make LLVM=1 ARCH=loongarch drivers/gpio/gpio-zevio.o
Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260509003438.956051-1-rosenp@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
The Waveshare DSI TOUCH family of panels has separate on-board GPIO
controller, which controls power supplies to the panel and the touch
screen and provides reset pins for both the panel and the touchscreen.
Also it provides a simple PWM controller for panel backlight. Add
support for this GPIO controller.
Tested-by: Riccardo Mereu <r.mereu@arduino.cc>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://patch.msgid.link/20260507-waveshare-dsi-touch-v5-2-d2ac7ccc22d4@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
gpio-sim is unusable without sysfs. Add a Kconfig dependency to its
entry.
Closes: https://sashiko.dev/#/patchset/20260428113439.9783-1-m32285159%40gmail.com
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260429080312.15561-1-bartosz.golaszewski@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
If we use the generic GPIO lib for MMIO in the Altera driver
we do not only cut down on the code, we also get get/set_multiple
for free.
Keep the local raw spinlock instead of reusing the bgpio spinlock
because it makes the gpiochip and irqchip nicely orthogonal.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20260427-gpio-mmio-more-v3-3-fe1882351424@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into gpio/for-next
Linux 7.1-rc1
|
|
Various names for Qualcomm as a company are used in user-visible config
options: QCOM, Qualcomm and Qualcomm Technologies. Switch to unified
"Qualcomm" so it will be easier for users to identify the options when
for example running menuconfig.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260423173553.92364-2-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC driver updates from Arnd Bergmann:
"The driver updates again are all over the place with many minor fixes
going into platform specific code. The most notable changes are:
- Support for Microchip pic64gx system controllers
- Work on cleaning up devicetree bindings for SoC drivers, and
converting them into the new format
- Lots of smaller changes for Qualcomm SoC drivers, including support
for a number of newly supported chips
- reset controller API cleanups and a new driver for Cix Sky1
- Reworks of the Tegra PMC and CBB drivers, along with a change to
how individual Tegra SoCs get selected in Kconfig and BPMP firmware
driver updates including a refresh of the ABI header to match the
version used by firmware
- STM32 updates to the firewall bus driver and support for the debug
bus through OP-TEE
- SCMI firmware driver improvements for reliability, in particular
for dealing with broken firmware interrupts
- Memory driver updates for Tegra, and a patch to remove the unused
Baikal T1 driver"
* tag 'soc-drivers-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (193 commits)
firmware: arm_ffa: Use the correct buffer size during RXTX_MAP
firmware: qcom: scm: Allow QSEECOM on Lenovo IdeaCentre Mini X
clk: spear: fix resource leak in clk_register_vco_pll()
reset: rzv2h-usb2phy: Add support for VBUS mux controller registration
reset: rzv2h-usb2phy: Convert to regmap API
dt-bindings: reset: renesas,rzv2h-usb2phy: Document RZ/G3E USB2PHY reset
dt-bindings: reset: renesas,rzv2h-usb2phy: Add '#mux-state-cells' property
soc: microchip: add mpfs gpio interrupt mux driver
dt-bindings: soc: microchip: document PolarFire SoC's gpio interrupt mux
gpio: mpfs: Add interrupt support
soc: qcom: ubwc: add helpers to get programmable values
soc: qcom: ubwc: add helper to get min_acc length
firmware: qcom: scm: Register gunyah watchdog device
soc: qcom: socinfo: Add SoC ID for SA8650P
dt-bindings: arm: qcom,ids: Add SoC ID for SA8650P
firmware: qcom: scm: Allow QSEECOM on Mahua CRD
soc: qcom: wcnss: simplify allocation of req
soc: qcom: pd-mapper: Add support for Eliza
soc: qcom: aoss: compare against normalized cooling state
soc: qcom: llcc: fix v1 SB syndrome register offset
...
|
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Add missing "is" to the driver's help text ("used to do" has a
completely different meaning).
Fixes: 7671f4949a6c9111 ("gpio: gpio-by-pinctrl: add pinctrl based generic GPIO driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/b1ecb31a37f8e35447122554a38985cb6240eb11.1775556619.git.geert+renesas@glider.be
[Bartosz: tweak the help text even more]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
There are no more users. Remove the dev-sync-probe module.
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260327-gpio-kill-dev-sync-probe-v1-4-efac254f1a1d@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
dev-err-probe is an overengineered solution to a simple problem. Use a
combination of wait_for_probe() and device_is_bound() to synchronously
wait for the platform device to probe.
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260327-gpio-kill-dev-sync-probe-v1-3-efac254f1a1d@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
dev-err-probe is an overengineered solution to a simple problem. Use a
combination of wait_for_probe() and device_is_bound() to synchronously
wait for the platform device to probe.
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260327-gpio-kill-dev-sync-probe-v1-2-efac254f1a1d@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
dev-err-probe is an overengineered solution to a simple problem. Use a
combination of wait_for_probe() and device_is_bound() to synchronously
wait for the platform device to probe.
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260327-gpio-kill-dev-sync-probe-v1-1-efac254f1a1d@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
This driver provides support for new way of handling platform events,
through the use of GPIO-signaled ACPI events. This mechanism is used on
Intel client platforms released in 2026 and later, starting with Intel
Nova Lake.
Signed-off-by: Alan Borzeszkowski <alan.borzeszkowski@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260401174526.60881-1-alan.borzeszkowski@linux.intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
Add support for interrupts to the PolarFire SoC GPIO driver. Each GPIO
has an independent interrupt that is wired to an interrupt mux that sits
between the controllers and the PLIC. The SoC has more GPIO lines than
connections from the mux to the PLIC, so some GPIOs must share PLIC
interrupts. The configuration is not static and is set at runtime,
conventionally by the platform's firmware. CoreGPIO, the version
intended for use in the FPGA fabric has two interrupt output ports, one
is IO_NUM bits wide, as is used in the hardened cores, and the other is
a single bit with all lines ORed together.
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
|
|
A number of GPIO drivers that used to have a CONFIG_OF_GPIO dependency now fail
to build on targets without CONFIG_OF:
WARNING: unmet direct dependencies detected for GPIO_SYSCON
Depends on [n]: GPIOLIB [=y] && HAS_IOMEM [=y] && MFD_SYSCON [=y] && OF [=n]
Selected by [y]:
- GPIO_SAMA5D2_PIOBU [=y] && GPIOLIB [=y] && HAS_IOMEM [=y] && MFD_SYSCON [=y] && (ARCH_AT91 || COMPILE_TEST [=y])
drivers/gpio/gpio-mt7621.c: In function 'mediatek_gpio_bank_probe':
drivers/gpio/gpio-mt7621.c:254:20: error: 'struct gpio_chip' has no member named 'of_gpio_n_cells'
254 | rg->chip.gc.of_gpio_n_cells = 2;
| ^
drivers/gpio/gpio-tegra186.c: In function 'tegra186_gpio_of_xlate':
drivers/gpio/gpio-tegra186.c:502:25: error: 'struct gpio_chip' has no member named 'of_gpio_n_cells'
502 | if (WARN_ON(chip->of_gpio_n_cells < 2))
| ^~
drivers/gpio/gpio-lpc32xx.c: In function 'lpc32xx_gpio_probe':
drivers/gpio/gpio-lpc32xx.c:523:49: error: 'struct gpio_chip' has no member named 'of_xlate'
523 | lpc32xx_gpiochip[i].chip.of_xlate = lpc32xx_of_xlate;
| ^
drivers/gpio/gpio-spacemit-k1.c: In function 'spacemit_gpio_add_bank':
drivers/gpio/gpio-spacemit-k1.c:234:11: error: 'struct gpio_chip' has no member named 'of_gpio_n_cells'
234 | gc->of_gpio_n_cells = 3;
| ^~
Bring that back as a dependency.
Fixes: 7803501e5754 ("gpio: drop unneeded Kconfig dependencies on OF_GPIO")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260325100144.1696731-1-arnd@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl into gpio/for-next
Pull in the SCMI GPIO driver along with its pinctrl dependencies.
|
|
The ARM SCMI pinctrl protocol allows GPIO access. Instead of creating
a new SCMI GPIO driver, this driver is a generic GPIO driver that uses
standard pinctrl interfaces.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
|
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OF_GPIO is selected automatically on all OF systems. Any symbols it
controls also provide stubs so there's really no reason to select it
explicitly. Remove all Kconfig dependencies/selects for GPIO drivers.
For those that have no other dependencies: convert it to requiring
CONFIG_OF instead to avoid new symbols popping up in make config.
Link: https://patch.msgid.link/20260316-gpio-of-kconfig-v2-3-de2f4b00a0e4@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
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It's been five years since we introduced the v2 uAPI and
the major consumer libgpiod is at v2.2.3.
Let's discourage the old ABI.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Kent Gibson <warthog618@gmail.com>
Link: https://patch.msgid.link/20260314-no-y-uapi1-default-v2-1-578f09c91b8f@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
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Add a GPIO IRQ chip implementation for the kempld GPIO controller. Of
note is only how the parent IRQ is obtained.
The IRQ for the GPIO controller can be configured in the BIOS, along
with the IRQ for the I2C controller. These IRQ are returned by ACPI
but this information is only usable if both IRQ are configured. When
only one is configured, only one is returned making it impossible to
know which one it is.
Luckily the BIOS will set the configured IRQ in the PLD registers, so
it can be read from there instead, and that also work on platforms
without ACPI.
The vendor driver allowed to override the IRQ using a module
parameters, so there are boards in field which used this parameter
instead of properly configuring the BIOS. This implementation provides
this as well for compatibility.
Signed-off-by: Alban Bedel <alban.bedel@lht.dlh.de>
Link: https://patch.msgid.link/20260311143120.2179347-5-alban.bedel@lht.dlh.de
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into gpio/for-next
Immutable branch between MFD, Clk, GPIO, Power, Regulator and RTC due for the v6.20 merge window
|
|
The ROHM BD72720 has 6 pins which may be configured as GPIOs. The
GPIO1 ... GPIO5 and EPDEN pins. The configuration is done to OTP at the
manufacturing, and it can't be read at runtime. The device-tree is
required to tell the software which of the pins are used as GPIOs.
Keep the pin mapping static regardless the OTP. This way the user-space
can always access the BASE+N for GPIO(N+1) (N = 0 to 4), and BASE + 5
for the EPDEN pin. Do this by setting always the number of GPIOs to 6,
and by using the valid-mask to invalidate the pins which aren't configured
as GPIOs.
First two pins can be set to be either input or output by OTP. Direction
can't be changed by software. Rest of the pins can be set as outputs
only. All of the pins support generating interrupts.
Support the Input/Output state getting/setting and the output mode
configuration (open-drain/push-pull).
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://patch.msgid.link/22e095ca92f0677ca3d3a768ad749629fc3c2006.1765804226.git.mazziesaccount@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
|
|
Add a new driver which provides a 1-to-many mapping for a single real
GPIO using a multiplexer. Each virtual GPIO corresponds to a multiplexer
state which, if set for the multiplexer, connects the real GPIO to the
corresponding virtual GPIO.
This can help in various usecases. One practical case is the special
hardware design of the Realtek-based XS1930-10 switch from Zyxel. It
features two SFP+ ports/cages whose signals are wired directly to the
switch SoC. Although Realtek SoCs are short on GPIOs, there are usually
enough the fit the SFP signals without any hacks.
However, Zyxel did some weird design and connected RX_LOS, MOD_ABS and
TX_FAULT of one SFP cage onto a single GPIO line controlled by a
multiplexer (the same for the other SFP cage). The single multiplexer
controls the lines for both SFP and depending on the state, the
designated 'signal GPIO lines' are connected to one of the three SFP
signals.
Because the SFP core/driver doesn't support multiplexer but needs single
GPIOs for each of the signals, this driver fills the gap between both.
It registers a gpio_chip, provides multiple virtual GPIOs and sets the
backing multiplexer accordingly.
Due to several practical issues, this is input-only and doesn't support
IRQs.
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Reviewed-by: Thomas Richard <thomas.richard@bootlin.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20251227180134.1262138-3-jelonek.jonas@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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TCAL6408 and TCAL6416 supports latchable inputs and maskable interrupt.
Tested on a TCAL6416, checked datasheets for the TCAL6408.
They use the same programming model ad the NXP PCAL64xx, but
support a lower supply power (1.08V to 3.6V) compared to PCAL
(1.65V to 5.5V)
Datasheet: https://www.ti.com/lit/ds/symlink/tcal6408.pdf
Datasheet: https://www.ti.com/lit/ds/symlink/tcal6416.pdf
Signed-off-by: Jan Remmet <j.remmet@phytec.de>
Link: https://lore.kernel.org/r/20251216-wip-jremmet-tcal6416rtw-v2-3-6516d98a9836@phytec.de
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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Allows the buildbots to test compilation.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://lore.kernel.org/r/20251217063229.38175-3-rosenp@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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Selecting OF_GPIO is generally not allowed, it always gets enabled
when both GPIOLIB and OF are turned on.
The tb10x driver now warns about this after it was enabled for
compile-testing:
WARNING: unmet direct dependencies detected for OF_GPIO
Depends on [n]: GPIOLIB [=y] && OF [=n] && HAS_IOMEM [=y]
Selected by [y]:
- GPIO_TB10X [=y] && GPIOLIB [=y] && HAS_IOMEM [=y] && (ARC_PLAT_TB10X || COMPILE_TEST [=y])
OF_GPIO is not required for compile-testing and is already enabled
when the driver is usable, so just drop the 'select' line.
Fixes: 682fbb18e14c ("gpio: tb10x: allow building the module with COMPILE_TEST=y")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20251205095429.1291866-1-arnd@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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The regmap drivers need to be selected by each user, without that there
can be configurations that fail to link:
x86_64-linux-ld: drivers/gpio/gpio-qixis-fpga.o: in function `qixis_cpld_gpio_probe':
gpio-qixis-fpga.c:(.text+0x13a): undefined reference to `__devm_regmap_init_mmio_clk'
Fixes: e88500247dc3 ("gpio: add QIXIS FPGA GPIO controller")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20251204094928.1031494-1-arnd@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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Since PCI device should not be abusing platform device, MFD parent to
platform child path is no longer being pursued for this driver. Convert
it to auxiliary driver, which will be used by EHL PSE auxiliary device.
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20251112034040.457801-3-raag.jadav@intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux.git into gpio/for-next
Immutable branch between the GPIO, ASoC and regulator trees for v6.19-rc1
Add better support for GPIOs shared by multiple consumers.
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