kernel/git/next/linux-next.git/drivers/platform/surface, branch master

platform/surface: aggregator: Consistently define ssam_device_ids using named initializers

2026-07-06T08:27:33+00:00

The .driver_data member of the the two struct ssam_device_id arrays were initialized by list expressions. This isn't easily readable if you don't work with the Surface System Aggregator core regularily. Using named initializers is more explicit and thus easier to parse and also more robust to changes of the struct definition. This robustness is relevant for a planned change to struct ssam_device_id replacing .driver_data by an anonymous union. This change doesn't introduce changes to the compiled ssam_device_id arrays. Signed-off-by: Uwe Kleine-König (The Capable Hub) Reviewed-by: Maximilian Luz Link: https://patch.msgid.link/4421c8c959452d8a717ebc7cc905ad9c2912680c.1781522576.git.u.kleine-koenig@baylibre.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: SAM: Add support for Surface Pro 12in

2026-05-28T13:40:39+00:00

Add a SAM client device node group and registry entry for the Microsoft Surface Pro, 12-inch with Snapdragon. This set enables the use of the following devices. 1: cover keyboard 2: cover touchpad 3: pen stash events. The battery info and charger info devices have been purposefully omitted as they are also reported by other drivers and cause conflicts. Signed-off-by: Harrison Vanderbyl Link: https://patch.msgid.link/ab458aadea651396d9ea7629419a32dc7510c593.1778822464.git.harrison.vanderbyl@gmail.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: surfacepro3_button: Check ACPI_COMPANION()

2026-05-19T13:51:07+00:00

Every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), so platform drivers that rely on the existence of a device's ACPI companion object need to verify its presence. Accordingly, add a requisite ACPI_COMPANION() check against NULL to the surfacepro3_button driver. Fixes: d913a5a12b40 ("platform/surface: surfacepro3_button: Convert to a platform driver") Signed-off-by: Rafael J. Wysocki Reviewed-by: Andy Shevchenko Reviewed-by: Chen Yu Link: https://patch.msgid.link/23119222.EfDdHjke4D@rafael.j.wysocki Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: aggregator_registry: omit battery & AC nodes on Surface Laptop 7

2026-05-19T13:27:12+00:00

Surface Laptop 7 exposes battery and AC status via Qualcomm PMIC GLINK qcom_battmgr. Registering the standard SSAM battery and AC client devices on this platform causes duplicate power-supply devices to appear. Drop the SSAM battery and AC nodes from the Surface Laptop 7 registry group so that only the qcom_battmgr power supplies are instantiated. Fixes: b27622f13172 ("platform/surface: Add OF support") Signed-off-by: Oliver White Link: https://patch.msgid.link/20260409034347.17381-1-oliverjwhite07@gmail.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: hotplug: Correct inclusion for GPIO APIs

2026-03-23T09:55:09+00:00

The modern GPIO APIs are available for users via linux/gpio/consumer.h. The linux/gpio.h is legacy header that is subject to remove. Hence replace the latter by the former in the driver. Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20260320221143.3237791-1-andriy.shevchenko@linux.intel.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: surfacepro3_button: Convert to a platform driver

2026-03-09T14:10:37+00:00

In all cases in which a struct acpi_driver is used for binding a driver to an ACPI device object, a corresponding platform device is created by the ACPI core and that device is regarded as a proper representation of underlying hardware. Accordingly, a struct platform_driver should be used by driver code to bind to that device. There are multiple reasons why drivers should not bind directly to ACPI device objects [1]. Overall, it is better to bind drivers to platform devices than to their ACPI companions, so convert the Surface Pro 3 button ACPI driver to a platform one. After this change, the subordinate input device and wakeup source class device will be registered under the platform device used for driver binding instead of its ACPI companion. While this is not expected to alter functionality, it changes sysfs layout and so it will be visible to user space. Link: https://lore.kernel.org/all/2396510.ElGaqSPkdT@rafael.j.wysocki/ [1] Signed-off-by: Rafael J. Wysocki Link: https://patch.msgid.link/3207406.CbtlEUcBR6@rafael.j.wysocki Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: surfacepro3_button: Register ACPI notify handler

2026-03-09T14:10:35+00:00

To facilitate subsequent conversion of the driver to a platform one, make it install an ACPI notify handler directly instead of using a .notify() callback in struct acpi_driver. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Link: https://patch.msgid.link/1881356.TLkxdtWsSY@rafael.j.wysocki Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: surfacepro3_button: Drop wakeup source on remove

2026-03-09T14:10:33+00:00

The wakeup source added by device_init_wakeup() in surface_button_add() needs to be dropped during driver removal, so update the driver to do that. Fixes: 19351f340765 ("platform/x86: surfacepro3: Support for wakeup from suspend-to-idle") Signed-off-by: Rafael J. Wysocki Link: https://patch.msgid.link/4368848.1IzOArtZ34@rafael.j.wysocki Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook