kernel/linux.git/drivers/platform/surface, branch linux-6.0.y

platform/surface: aggregator_registry: Add support for Surface Laptop 5

2022-12-02T16:43:15+00:00

[ Upstream commit 4a567d164d0e0c57e7b694b988db86361f130cb7 ] Add device nodes to enable support for battery and charger status, the ACPI platform profile, as well as internal HID devices (including touchpad and keyboard) on the Surface Laptop 5. Signed-off-by: Maximilian Luz Link: https://lore.kernel.org/r/20221115231440.1338142-1-luzmaximilian@gmail.com Signed-off-by: Hans de Goede Signed-off-by: Sasha Levin

platform/surface: aggregator_registry: Add support for Surface Pro 9

2022-12-02T16:43:15+00:00

[ Upstream commit d076f30957b1d026e9f6340691624926db0d369d ] Add device nodes to enable support for battery and charger status, the ACPI platform profile, as well as internal and type-cover HID devices (including sensors, touchpad, keyboard, and other miscellaneous devices) on the Surface Pro 9. This does not include support for a tablet-mode switch yet, as that is now handled via the POS subsystem (unlike the Surface Pro 8, where it is handled via the KIP subsystem) and therefore needs further changes. While we're at it, also add the missing comment for the Surface Pro 8. Signed-off-by: Maximilian Luz Link: https://lore.kernel.org/r/20221113185951.224759-2-luzmaximilian@gmail.com Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede Signed-off-by: Sasha Levin

platform/surface: aggregator: Do not check for repeated unsequenced packets

2022-11-26T08:27:38+00:00

[ Upstream commit d9a477f643eb3de71fbea5ae6103b800ceb8f547 ] Currently, we check any received packet whether we have already seen it previously, regardless of the packet type (sequenced / unsequenced). We do this by checking the sequence number. This assumes that sequence numbers are valid for both sequenced and unsequenced packets. However, this assumption appears to be incorrect. On some devices, the sequence number field of unsequenced packets (in particular HID input events on the Surface Pro 9) is always zero. As a result, the current retransmission check kicks in and discards all but the first unsequenced packet, breaking (among other things) keyboard and touchpad input. Note that we have, so far, only seen packets being retransmitted in sequenced communication. In particular, this happens when there is an ACK timeout, causing the EC (or us) to re-send the packet waiting for an ACK. Arguably, retransmission / duplication of unsequenced packets should not be an issue as there is no logical condition (such as an ACK timeout) to determine when a packet should be sent again. Therefore, remove the retransmission check for unsequenced packets entirely to resolve the issue. Fixes: c167b9c7e3d6 ("platform/surface: Add Surface Aggregator subsystem") Signed-off-by: Maximilian Luz Link: https://lore.kernel.org/r/20221113185951.224759-1-luzmaximilian@gmail.com Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede Signed-off-by: Sasha Levin

platform/surface: aggregator_registry: Add HID devices for sensors and UCSI client to SP8

2022-08-15T13:04:51+00:00

Add software nodes for the HID sensor collection and the UCM UCSI HID client to the Surface Pro 8. In contrast to the type-cover devices, these devices are directly attached to the SAM controller, without any hub. This enables support for HID-based sensors, including the ones used for automatic screen rotation, on the Surface Pro 8. Signed-off-by: Maximilian Luz Link: https://lore.kernel.org/r/20220810144117.493710-4-luzmaximilian@gmail.com Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede

platform/surface: aggregator_registry: Rename HID device nodes based on new findings

2022-08-15T13:04:41+00:00

On Windows, the HID devices with target ID 1 are grouped as "Surface Hot Plug - SAM". Rename their device nodes in the registry to reflect that and update the comments accordingly. Signed-off-by: Maximilian Luz Link: https://lore.kernel.org/r/20220810144117.493710-3-luzmaximilian@gmail.com Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede

platform/surface: aggregator_registry: Rename HID device nodes based on their function

2022-08-15T13:04:37+00:00

Rename HID device nodes based on their function. In particular, these are nodes for firmware updates via the CFU mechanism (component firmware update), HID based sensors, and a USB-C UCSI client. Signed-off-by: Maximilian Luz Link: https://lore.kernel.org/r/20220810144117.493710-2-luzmaximilian@gmail.com Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede

platform/surface: aggregator_registry: Add support for Surface Laptop Go 2

2022-08-15T11:20:38+00:00

The Surface Laptop Go 2 seems to have the same SAM client devices as the Surface Laptop Go 1, so re-use its node group. Signed-off-by: Maximilian Luz Link: https://lore.kernel.org/r/20220810140133.99087-1-luzmaximilian@gmail.com Signed-off-by: Hans de Goede

platform/surface: gpe: Add support for 13" Intel version of Surface Laptop 4

2022-07-28T18:40:40+00:00

The 13" Intel version of the Surface Laptop 4 uses the same GPE as the Surface Laptop Studio for wakeups via the lid. Set it up accordingly. Signed-off-by: Maximilian Luz Link: https://lore.kernel.org/r/20220721121120.2002430-1-luzmaximilian@gmail.com Signed-off-by: Hans de Goede

platform/surface: tabletsw: Fix __le32 integer access

2022-07-17T14:20:35+00:00

The sources.count field is a __le32 inside a packed struct. So use the proper functions to access it. Reported-by: kernel test robot Fixes: 9f794056db5b ("platform/surface: Add KIP/POS tablet-mode switch driver") Signed-off-by: Maximilian Luz Link: https://lore.kernel.org/r/20220717120735.2052160-1-luzmaximilian@gmail.com Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede

platform/surface: Update copyright year of various drivers

2022-07-02T09:23:30+00:00

Update the copyright of various Surface drivers to the current year. Signed-off-by: Maximilian Luz Link: https://lore.kernel.org/r/20220624205800.1355621-4-luzmaximilian@gmail.com Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede