Linux kernel documentation tree maintained by Jonathan Corbet http://mirrors.hust.edu.cn/git/lwn.git/atom?h=docs-mw 2026-04-11T07:02:13+00:00 2026-04-11T07:02:13+00:00 Victor Duicu victor.duicu@microchip.com 2026-04-03T13:32:17+00:00 urn:sha1:e2fe950f34e54d6bd91d2c56501faa903e25fb5e Add driver for Microchip MCP998X/33 and MCP998XD/33D Multichannel Automotive Temperature Monitor Family. Signed-off-by: Victor Duicu <victor.duicu@microchip.com> Link: https://lore.kernel.org/r/20260403-add-mcp9982-hwmon-v12-2-b3bfb26ff136@microchip.com [groeck: Add missing break; to avoid build warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net> 2026-04-10T15:26:36+00:00 Chris Packham chris.packham@alliedtelesis.co.nz 2026-04-10T01:24:12+00:00 urn:sha1:a2981c20ad673bcd5f0e5caa6ef103b8fcdbd6a2 Add pmbus support for Sony APS-379 power supplies. There are a few PMBUS commands that return data that is undocumented/invalid so these need to be rejected with -ENXIO. The READ_VOUT command returns data in linear11 format instead of linear16 so we need to workaround this. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Link: https://lore.kernel.org/r/20260410012414.2818829-3-chris.packham@alliedtelesis.co.nz [groeck: Dropped empty line from documentation; added module name to Kconfig] Signed-off-by: Guenter Roeck <linux@roeck-us.net> 2026-04-03T18:09:09+00:00 Sergio Melas sergiomelas@gmail.com 2026-03-27T22:16:02+00:00 urn:sha1:c67c248ca406a86cf8b20bf1b3af5e7f3e36581f This driver provides fan speed monitoring for Lenovo Yoga, Legion, and IdeaPad laptops by interfacing with the Embedded Controller (EC) via ACPI. To address low-resolution sampling in Lenovo EC firmware, a Rate-Limited Lag (RLLag) filter is implemented. The filter ensures a consistent physical curve regardless of userspace polling frequency. Hardware identification is performed via DMI-based quirk tables, which map specific ACPI object paths and register widths (8-bit vs 16-bit) deterministically. Signed-off-by: Sergio Melas <sergiomelas@gmail.com> Link: https://lore.kernel.org/r/20260327221602.18832-1-sergiomelas@gmail.com [groeck: Dropped double empty line in Kconfig] Signed-off-by: Guenter Roeck <linux@roeck-us.net> 2026-03-31T02:45:05+00:00 Mariano Abad weimaraner@gmail.com 2026-03-03T00:46:04+00:00 urn:sha1:a28b088ede9df9fd9f5be6e54b4a7d9fc70d9f35 Add hardware monitoring support for the LattePanda Sigma SBC (DFRobot, ITE IT8613E EC). The driver reads fan speed and temperatures via direct port I/O, as the BIOS disables the ACPI EC interface. Signed-off-by: Mariano Abad <weimaraner@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> 2026-03-31T02:45:04+00:00 Andy Shevchenko andriy.shevchenko@linux.intel.com 2026-02-20T14:35:00+00:00 urn:sha1:7c3a3b29dea6f246aaf1d8cb369e7cbf48a49f3c As noticed in the discussion [1] the Baikal SoC and platforms are not going to be finalized, hence remove stale code. Link: https://lore.kernel.org/lkml/22b92ddf-6321-41b5-8073-f9c7064d3432@infradead.org/ [1] Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20260220143500.2401057-1-andriy.shevchenko@linux.intel.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> 2026-02-24T15:25:26+00:00 Michael Walle mwalle@kernel.org 2026-02-23T10:04:48+00:00 urn:sha1:e710b2283725f0db9e5b99c2483df3f4a7feadbd This reverts commit 443b39c82c322c9f3c38bea0389fe927ba00b3b4. I was just informed that this product is discontinued (without being ever released to the market). Pull the plug and let's not waste any more maintainers time. Signed-off-by: Michael Walle <mwalle@kernel.org> Link: https://lore.kernel.org/r/20260223100459.844967-4-mwalle@kernel.org Signed-off-by: Guenter Roeck <linux@roeck-us.net> 2026-02-11T19:00:19+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-02-11T19:00:19+00:00 urn:sha1:532355a756103639816068b89f73cc7789b16275 Pull hwmon updates from Guenter Roeck: "New PMBus drivers: - HiTRON HAC300S power supply - Monolithic MP5926 Hot-Swap Controller - STEF48H28 hot-swap controller Support for new chips in existing drivers - Support for Pro WS TRX50-SAGE WIFI A and ROG MAXIMUS X HERO (asus-ec-sensors) - Support for Dell OptiPlex 7080 (dell-smm) - Support for F81968 (f71882fg) - Support for Micro PC 2 (gpd-fan) - New customer ID for ASRock Z590 Taichi (nct6683) - Support for ASUS Pro WS WRX90E-SAGE SE (nct6775) - Support for SHT85 (sht3x) - Support for P3T1035 and P3T2030 (tmp108) Bug fixes: - Revert "fix" for UAF which didn't fix a UAF but introduced a race condition resulting in a NULL pointer crash (ibmpex) - Fix failure to instantiate driver if the chip is configured for VID mode (pmbus/mpq8785) - Use READ/WRITE_ONCE to avoid compiler optimization induced race (max16065) - Resource leak fixes (nct7363, emc2305) Other notable changes: - Support for temperature limit thresholds (cros_ec) - Add TjMax for Silvermont through Tremont Atoms (coretemp) Various other minor improvements" * tag 'hwmon-for-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (42 commits) hwmon: (pmbus/mpq8785) fix VOUT_MODE mismatch during identification Revert "hwmon: (ibmpex) fix use-after-free in high/low store" hwmon: (max16065) Use READ/WRITE_ONCE to avoid compiler optimization induced race hwmon: (nct6775) use sysfs_emit instead of sprintf hwmon: pmbus: fix table in STEF48H28 documentation hwmon: Add support for HiTRON HAC300S PSU dt-bindings: trivial-devices: Add hitron,hac300s hwmon: (cros_ec) Add support for temperature thresholds hwmon: (cros_ec) Move temperature channel params to a macro hwmon: (cros_ec) Add support for fan target speed hwmon: (cros_ec) Split up supported features in the documentation hwmon: (tmp108) Add P3T1035 and P3T2030 support hwmon: (tmp108) Add support for P3T1035 and P3T2030 dt-bindings: hwmon: ti,tmp108: Add P3T1035,P3T2030 hwmon: pmbus: add support for STEF48H28 dt-bindings: hwmon: add STEF48H28 hwmon: (nct7363) Fix a resource leak in nct7363_present_pwm_fanin hwmon: (emc2305) Fix a resource leak in emc2305_of_parse_pwm_child hwmon: (gpd-fan) add support for Micro PC 2 hwmon: (coretemp) Add TjMax for Silvermont through Tremont Atoms ... 2026-02-07T17:33:00+00:00 Vasileios Amoiridis vasileios.amoiridis@cern.ch 2026-01-19T19:08:06+00:00 urn:sha1:669cf162f7a133099c7dc5db96f8283c98e73f1d Add Support for HiTRON HAC300S PSU. This is a AC/DC hot-swappable CompactPCI Serial Dual output active current sharing switching power supply with a 312W rating. Signed-off-by: Vasileios Amoiridis <vasileios.amoiridis@cern.ch> Link: https://lore.kernel.org/r/20260119190806.35276-3-vassilisamir@gmail.com [groeck: Fix whitespace / alignment problems; return -ENODATA from hac300s_read_byte_data() if the PMBus core can handle the operation] Signed-off-by: Guenter Roeck <linux@roeck-us.net> 2026-01-31T15:38:32+00:00 Charles Hsu hsu.yungteng@gmail.com 2026-01-26T06:37:12+00:00 urn:sha1:64824861ebd77706e58017c84292753dfc8f2d0c Add support for STEF48H28 hot-swap controller. Signed-off-by: Charles Hsu <hsu.yungteng@gmail.com> Link: https://lore.kernel.org/r/20260126063712.1049025-2-hsu.yungteng@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> 2026-01-31T15:38:31+00:00 Yuxi Wang Yuxi.Wang@monolithicpower.com 2025-12-19T05:54:13+00:00 urn:sha1:ca2cf35544926dd668b28f63a5babb8dc36a26d6 Add support for mps mp5926. Signed-off-by: Yuxi Wang <Yuxi.Wang@monolithicpower.com> Link: https://lore.kernel.org/r/20251219055413.1661-3-Yuxi.Wang@monolithicpower.com [groeck: Use consistent comment style, and use return value from dev_err_probe()] Signed-off-by: Guenter Roeck <linux@roeck-us.net>