kernel/linux.git/include/linux/mfd, branch v6.6.132

mfd: wm8350-core: Use IRQF_ONESHOT

2026-03-04T12:19:34+00:00

[ Upstream commit 553b4999cbe231b5011cb8db05a3092dec168aca ] Using a threaded interrupt without a dedicated primary handler mandates the IRQF_ONESHOT flag to mask the interrupt source while the threaded handler is active. Otherwise the interrupt can fire again before the threaded handler had a chance to run. Mark explained that this should not happen with this hardware since it is a slow irqchip which is behind an I2C/ SPI bus but the IRQ-core will refuse to accept such a handler. Set IRQF_ONESHOT so the interrupt source is masked until the secondary handler is done. Fixes: 1c6c69525b40e ("genirq: Reject bogus threaded irq requests") Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Reviewed-by: Charles Keepax Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20260128095540.863589-16-bigeasy@linutronix.de Signed-off-by: Sasha Levin

mfd: syscon: Add of_syscon_register_regmap() API

2025-02-08T08:51:57+00:00

[ Upstream commit 769cb63166d90f1fadafa4352f180cbd96b6cb77 ] The of_syscon_register_regmap() API allows an externally created regmap to be registered with syscon. This regmap can then be returned to client drivers using the syscon_regmap_lookup_by_phandle() APIs. The API is used by platforms where mmio access to the syscon registers is not possible, and a underlying soc driver like exynos-pmu provides a SoC specific regmap that can issue a SMC or hypervisor call to write the register. This approach keeps the SoC complexities out of syscon, but allows common drivers such as syscon-poweroff, syscon-reboot and friends that are used by many SoCs already to be re-used. Signed-off-by: Peter Griffin Reviewed-by: Arnd Bergmann Reviewed-by: Sam Protsenko Tested-by: Will McVicker Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20240621115544.1655458-2-peter.griffin@linaro.org Signed-off-by: Lee Jones Stable-dep-of: 805f7aaf7fee ("mfd: syscon: Fix race in device_node_get_regmap()") Signed-off-by: Sasha Levin

mfd: syscon: Remove extern from function prototypes

2025-02-08T08:51:56+00:00

[ Upstream commit 0db017f8edd9b9af818bc1d68ba578df1b4c4628 ] The kernel coding style does not require 'extern' in function prototypes in .h files, so remove them as they are not needed. To avoid checkpatch warnings such as CHECK: Lines should not end with a '(' +struct regmap *syscon_regmap_lookup_by_phandle( The indentation is also updated. No functional changes in this patch. Signed-off-by: Peter Griffin Link: https://lore.kernel.org/r/20240220115012.471689-3-peter.griffin@linaro.org Signed-off-by: Lee Jones Stable-dep-of: 805f7aaf7fee ("mfd: syscon: Fix race in device_node_get_regmap()") Signed-off-by: Sasha Levin

mfd: core: Un-constify mfd_cell.of_reg

2023-11-20T10:59:23+00:00

[ Upstream commit 3c70342f1f0045dc827bb2f02d814ce31e0e0d05 ] Enable dynamically filling in the whole mfd_cell structure. All other fields already allow that. Fixes: 466a62d7642f ("mfd: core: Make a best effort attempt to match devices with the correct of_nodes") Signed-off-by: Michał Mirosław Link: https://lore.kernel.org/r/b73fe4bc4bd6ba1af90940a640ed65fe254c0408.1693253717.git.mirq-linux@rere.qmqm.pl Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

Merge tag 'mfd-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

2023-09-04T20:47:59+00:00

Pull NFD updates from Lee Jones: "New Drivers: - Add support for the Cirrus Logic CS42L43 Audio CODEC Fix-ups: - Make use of specific printk() format tags for various optimisations - Kconfig / module modifications / tweaking - Simplify obtaining resources (memory, device data) using unified API helpers - Bunch of Device Tree additions, conversions and adaptions - Convert a bunch of Regmap configurations to use the Maple Tree cache - Ensure correct includes are present and remove some that are not required - Remove superfluous code - Reduce amount of cycles spent in critical sections - Omit the use of redundant casts and if relevant replace with better ones - Swap out raw_spin_{un}lock_irq{save,restore}() for spin_{un}lock_irq{save,restore}() Bug Fixes: - Repair theoretical deadlock situation - Fix some link-time dependencies - Use more appropriate datatype when casting" * tag 'mfd-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (70 commits) mfd: mc13xxx: Simplify device data fetching in probe() mfd: rz-mtu3: Replace raw_spin_lock->spin_lock() mfd: rz-mtu3: Reduce critical sections mfd: mxs-lradc: Fix Wvoid-pointer-to-enum-cast warning mfd: wm31x: Fix Wvoid-pointer-to-enum-cast warning mfd: wm8994: Fix Wvoid-pointer-to-enum-cast warning mfd: tc3589: Fix Wvoid-pointer-to-enum-cast warning mfd: lp87565: Fix Wvoid-pointer-to-enum-cast warning mfd: hi6421-pmic: Fix Wvoid-pointer-to-enum-cast warning mfd: max77541: Fix Wvoid-pointer-to-enum-cast warning mfd: max14577: Fix Wvoid-pointer-to-enum-cast warning mfd: stmpe: Fix Wvoid-pointer-to-enum-cast warning mfd: rn5t618: Remove redundant of_match_ptr() mfd: lochnagar-i2c: Remove redundant of_match_ptr() mfd: stpmic1: Remove redundant of_match_ptr() mfd: act8945a: Remove redundant of_match_ptr() mfd: rsmu_spi: Remove redundant of_match_ptr() mfd: altera-a10sr: Remove redundant of_match_ptr() mfd: rsmu_i2c: Remove redundant of_match_ptr() mfd: tc3589x: Remove redundant of_match_ptr() ...

Merge tag 'spi-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

2023-08-29T16:47:33+00:00

Pull spi updates from Mark Brown: "There's been quite a lot of generic activity here, but more administrative than featuers. We also have a bunch of new drivers, including one that's part of a MFD so we pulled in the core parts of that: - Lots of work from both Yang Yingliang and Andy Shevchenko on moving to host/device/controller based terminology for devices. - QuadSPI SPI support for Allwinner sun6i. - New device support Cirrus Logic CS43L43, Longsoon, Qualcomm GENI QuPv3 and StarFive JH7110 QSPI" * tag 'spi-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (151 commits) spi: at91-usart: Use PTR_ERR_OR_ZERO() to simplify code spi: spi-sn-f-ospi: switch to use modern name spi: sifive: switch to use modern name spi: sh: switch to use modern name spi: sh-sci: switch to use modern name spi: sh-msiof: switch to use modern name spi: sh-hspi: switch to use modern name spi: sc18is602: switch to use modern name spi: s3c64xx: switch to use modern name spi: rzv2m-csi: switch to use devm_spi_alloc_host() spi: rspi: switch to use spi_alloc_host() spi: rockchip: switch to use modern name spi: rockchip-sfc: switch to use modern name spi: realtek-rtl: switch to use devm_spi_alloc_host() spi: rb4xx: switch to use modern name spi: qup: switch to use modern name spi: spi-qcom-qspi: switch to use modern name spi: pxa2xx: switch to use modern name spi: ppc4xx: switch to use modern name spi: spl022: switch to use modern name ...

regulator: tps65086: Select dedicated regulator config for chip variant

2023-08-18T21:06:52+00:00

Some configurations differ between chip variants, e,g. the register to control the on of state of LDOA1 and SWB2. Thus, it is necessary to choose the correct configuration for a dedicated device. If the wrong configuration was used, the LDOA1 output that was disabled by the bootloader was enabled in Kernel again. Each chip variant gets its dedicated configuration selected by the chip ID previously collected from MFD probe function. The VTT enum value (tps65086_regulators) is shifted because not all chip variants have a separate SWB2 switch. Sometimes they are merged. So the configuration possibilities differ, thus the regulator configuration arrays have a different length. Signed-off-by: Andre Werner Link: https://lore.kernel.org/r/20230818083721.29790-5-andre.werner@systec-electronic.com Signed-off-by: Mark Brown

mfd: 88pm860x: Remove unused extern declarations

2023-08-18T20:48:05+00:00

commit 260a127bfbeb ("mfd: 88pm860x-i2c: Purge unused functions") left behind this. Signed-off-by: Yue Haibing Link: https://lore.kernel.org/r/20230728132841.10648-1-yuehaibing@huawei.com Signed-off-by: Lee Jones

mfd: ab8500: Remove unused extern declarations

2023-08-18T20:48:05+00:00

commit d28f1db8187d ("mfd: Remove confusing ab8500-i2c file and merge into ab8500-core") left behind this. Signed-off-by: Yue Haibing Link: https://lore.kernel.org/r/20230728132439.31568-1-yuehaibing@huawei.com Signed-off-by: Lee Jones

mfd: max77686: Remove unused extern declarations

2023-08-18T20:48:04+00:00

max77686_irq_init() and max77686_irq_exit() are not used since commit 6f1c1e71d933 ("mfd: max77686: Convert to use regmap_irq"). And max77686_irq_resume() never be implemented since introduced in commit dae8a969d512 ("mfd: Add Maxim 77686 driver"). Signed-off-by: Yue Haibing Reviewed-by: Krzysztof Kozlowski Reviewed-by: Chanwoo Choi Link: https://lore.kernel.org/r/20230728132709.27052-1-yuehaibing@huawei.com Signed-off-by: Lee Jones