Hi, On 12/21/20 7:39 PM, Maximilian Luz wrote: > Hello, > > Here is version three of the Surface System Aggregator Module (SAM/SSAM) > driver series, adding initial support for the embedded controller on 5th > and later generation Microsoft Surface devices. Initial support includes > the ACPI interface to the controller, via which battery and thermal > information is provided on some of these devices. > > The first version and cover letter detailing what this series is about > can be found at > > https://lore.kernel.org/platform-driver-x86/20201115192143.21571-1-luzmaximilian@xxxxxxxxx/ > > the previous version (v2) at > > https://lore.kernel.org/platform-driver-x86/20201203212640.663931-1-luzmaximilian@xxxxxxxxx/ > > This patch-set can also be found at the following repository and > reference, if you prefer to look at a kernel tree instead of these > emails: > > https://github.com/linux-surface/kernel tags/s/surface-aggregator/v3 > > Thank you all for the feedback to and reviews of the previous versions, > I hope I have addressed all comments. Thank you for your patch-series, I've applied the series to my review-hans branch: https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans This has been applied on top of: "platform/surface: SURFACE_PLATFORMS should depend on ACPI" As requested. Since my review-hans branch has been fast-forwarded to 5.11-rc1 there where some conflicts: 6/9 "platform/surface: aggregator: Add dedicated bus and device type" had conflicts in: scripts/mod/devicetable-offsets.c scripts/mod/file2alias.c 8/9 "platform/surface: Add Surface Aggregator user-space interface" had a conflict in: Documentation/userspace-api/ioctl/ioctl-number.rst This conflict was caused by the addition of documentation of the sgx ioctls, these use 0xA4 as "Code" byte (shared with uapi/linux/tee.h), so the 0xA5 code for the sam cdev ioctl is still unique. I'm pretty sure that I've properly resolved the conflicts, but please double-check. Once I've run some tests on this branch the patches there will be added to the platform-drivers-x86/for-next branch and eventually will be included in the pdx86 pull-request to Linus for the next merge-window. Regards, Hans > Note: In v3, I have dropped the explicit dependency of the core module > and driver on CONFIG_ACPI due to the incoming > > [PATCH] platform/surface: SURFACE_PLATFORMS should depend on ACPI > > Thus, this series depends on said patch. This patch can be found at > > https://www.spinics.net/lists/platform-driver-x86/msg23929.html > > > Changes in v1 (from RFC, overview): > - move to platform/surface > - add copyright lines > - change SPDX identifier to GPL-2.0+ (was GPL-2.0-or-later) > - change user-space interface from debugfs to misc-device > - address issues in user-space interface > - fix typos in commit messages and documentation > - fix some bugs, address other issues > > Changes in v2 (overview): > - simplify some code, mostly with regards to concurrency > - add architectural overview to documentation > - improve comments for documentation > - use printk specifier for hex prefix instead of hard-coding it > - spell check comments and strings, fix typos > - unify comment style > - run checkpatch --strict, fix these and other style issues > > Changes in v3 (overview): > - remove explicit dependency on ACPI as this is going to be covered by > CONFIG_SURFACE_PLATFORMS > - simplify locking requirements > - help enforce locking requirements via lockdep assertions > - fix false-positive lockdep warning > - warn on event enablement reference counter exhaustion > - don't warn about unhandled event if event handling failed > - validate flags on request initialization > - improve documentation/add comments > - replace 'iff' with 'if' in documentation and comments > > Changes regarding specific patches (and more details) can be found on > the individual patch. > > > Maximilian Luz (9): > platform/surface: Add Surface Aggregator subsystem > platform/surface: aggregator: Add control packet allocation caching > platform/surface: aggregator: Add event item allocation caching > platform/surface: aggregator: Add trace points > platform/surface: aggregator: Add error injection capabilities > platform/surface: aggregator: Add dedicated bus and device type > docs: driver-api: Add Surface Aggregator subsystem documentation > platform/surface: Add Surface Aggregator user-space interface > platform/surface: Add Surface ACPI Notify driver > > Documentation/driver-api/index.rst | 1 + > .../surface_aggregator/client-api.rst | 38 + > .../driver-api/surface_aggregator/client.rst | 393 +++ > .../surface_aggregator/clients/cdev.rst | 87 + > .../surface_aggregator/clients/index.rst | 21 + > .../surface_aggregator/clients/san.rst | 44 + > .../driver-api/surface_aggregator/index.rst | 21 + > .../surface_aggregator/internal-api.rst | 67 + > .../surface_aggregator/internal.rst | 577 ++++ > .../surface_aggregator/overview.rst | 77 + > .../driver-api/surface_aggregator/ssh.rst | 344 +++ > .../userspace-api/ioctl/ioctl-number.rst | 2 + > MAINTAINERS | 13 + > drivers/platform/surface/Kconfig | 38 + > drivers/platform/surface/Makefile | 3 + > drivers/platform/surface/aggregator/Kconfig | 68 + > drivers/platform/surface/aggregator/Makefile | 17 + > drivers/platform/surface/aggregator/bus.c | 415 +++ > drivers/platform/surface/aggregator/bus.h | 27 + > .../platform/surface/aggregator/controller.c | 2579 +++++++++++++++++ > .../platform/surface/aggregator/controller.h | 285 ++ > drivers/platform/surface/aggregator/core.c | 839 ++++++ > .../platform/surface/aggregator/ssh_msgb.h | 205 ++ > .../surface/aggregator/ssh_packet_layer.c | 2057 +++++++++++++ > .../surface/aggregator/ssh_packet_layer.h | 190 ++ > .../platform/surface/aggregator/ssh_parser.c | 228 ++ > .../platform/surface/aggregator/ssh_parser.h | 154 + > .../surface/aggregator/ssh_request_layer.c | 1264 ++++++++ > .../surface/aggregator/ssh_request_layer.h | 143 + > drivers/platform/surface/aggregator/trace.h | 632 ++++ > .../platform/surface/surface_acpi_notify.c | 886 ++++++ > .../surface/surface_aggregator_cdev.c | 303 ++ > include/linux/mod_devicetable.h | 18 + > include/linux/surface_acpi_notify.h | 39 + > include/linux/surface_aggregator/controller.h | 824 ++++++ > include/linux/surface_aggregator/device.h | 423 +++ > include/linux/surface_aggregator/serial_hub.h | 672 +++++ > include/uapi/linux/surface_aggregator/cdev.h | 78 + > scripts/mod/devicetable-offsets.c | 8 + > scripts/mod/file2alias.c | 23 + > 40 files changed, 14103 insertions(+) > create mode 100644 Documentation/driver-api/surface_aggregator/client-api.rst > create mode 100644 Documentation/driver-api/surface_aggregator/client.rst > create mode 100644 Documentation/driver-api/surface_aggregator/clients/cdev.rst > create mode 100644 Documentation/driver-api/surface_aggregator/clients/index.rst > create mode 100644 Documentation/driver-api/surface_aggregator/clients/san.rst > create mode 100644 Documentation/driver-api/surface_aggregator/index.rst > create mode 100644 Documentation/driver-api/surface_aggregator/internal-api.rst > create mode 100644 Documentation/driver-api/surface_aggregator/internal.rst > create mode 100644 Documentation/driver-api/surface_aggregator/overview.rst > create mode 100644 Documentation/driver-api/surface_aggregator/ssh.rst > create mode 100644 drivers/platform/surface/aggregator/Kconfig > create mode 100644 drivers/platform/surface/aggregator/Makefile > create mode 100644 drivers/platform/surface/aggregator/bus.c > create mode 100644 drivers/platform/surface/aggregator/bus.h > create mode 100644 drivers/platform/surface/aggregator/controller.c > create mode 100644 drivers/platform/surface/aggregator/controller.h > create mode 100644 drivers/platform/surface/aggregator/core.c > create mode 100644 drivers/platform/surface/aggregator/ssh_msgb.h > create mode 100644 drivers/platform/surface/aggregator/ssh_packet_layer.c > create mode 100644 drivers/platform/surface/aggregator/ssh_packet_layer.h > create mode 100644 drivers/platform/surface/aggregator/ssh_parser.c > create mode 100644 drivers/platform/surface/aggregator/ssh_parser.h > create mode 100644 drivers/platform/surface/aggregator/ssh_request_layer.c > create mode 100644 drivers/platform/surface/aggregator/ssh_request_layer.h > create mode 100644 drivers/platform/surface/aggregator/trace.h > create mode 100644 drivers/platform/surface/surface_acpi_notify.c > create mode 100644 drivers/platform/surface/surface_aggregator_cdev.c > create mode 100644 include/linux/surface_acpi_notify.h > create mode 100644 include/linux/surface_aggregator/controller.h > create mode 100644 include/linux/surface_aggregator/device.h > create mode 100644 include/linux/surface_aggregator/serial_hub.h > create mode 100644 include/uapi/linux/surface_aggregator/cdev.h >
