Am 07.11.24 um 22:45 schrieb Mario Limonciello:
On 11/7/2024 03:06, Armin Wolf wrote:
Am 07.11.24 um 07:02 schrieb Mario Limonciello:
Currently there are a number of ASUS products on the market that
happen to
have ACPI objects for amd-pmf to bind to as well as an ACPI platform
profile provided by asus-wmi.
The ACPI platform profile support created by amd-pmf on these ASUS
products is "Function 9" which is specifically for "BIOS or EC
notification" of power slider position. This feature is actively used
by some designs such as Framework 13 and Framework 16.
On these ASUS designs we keep on quirking more and more of them to turn
off this notification so that asus-wmi can bind.
This however isn't how Windows works. "Multiple" things are
notified for
the power slider position. This series adjusts Linux to behave
similarly.
Multiple drivers can now register an ACPI platform profile and will
react
to set requests.
To avoid chaos, only positions that are common to both drivers are
accepted when the legacy /sys/firmware/acpi/platform_profile interface
is used.
This series also adds a new concept of a "custom" profile. This allows
userspace to discover that there are multiple driver handlers that are
configured differently.
This series also allows dropping all of the PMF quirks from amd-pmf.
Thank you for this patch series. The overall design seems good to me,
but i think
you forgot to extend platform_profile_notify().
What did you have in mind? platform_profile_notify() is called from
drivers and just used to notify the legacy sysfs in the event of a
change.
Were you thinking it also needs to notify the class device perhaps?
If platform_profile_notify() only notifies the legacy sysfs interface, then userspace applications are forced to continue using the legacy sysfs interface
for receiving notifications.
Thanks,
Armin Wolf
Thanks,
Armin Wolf
---
v5:
* Adjust mutex handling
* Add missing error handling
* Drop dev member
* Add cleanup handling for module unload
* Fix crash on accessing legacy files after all drivers unloaded
Mario Limonciello (20):
ACPI: platform-profile: Add a name member to handlers
platform/x86/dell: dell-pc: Create platform device
ACPI: platform_profile: Add platform handler argument to
platform_profile_remove()
ACPI: platform_profile: Move sanity check out of the mutex
ACPI: platform_profile: Move matching string for new profile out of
mutex
ACPI: platform_profile: Use guard(mutex) for register/unregister
ACPI: platform_profile: Use `scoped_cond_guard`
ACPI: platform_profile: Create class for ACPI platform profile
ACPI: platform_profile: Unregister class and sysfs group on module
unload
ACPI: platform_profile: Add name attribute to class interface
ACPI: platform_profile: Add choices attribute for class interface
ACPI: platform_profile: Add profile attribute for class interface
ACPI: platform_profile: Notify change events on register and
unregister
ACPI: platform_profile: Only show profiles common for all handlers
ACPI: platform_profile: Add concept of a "custom" profile
ACPI: platform_profile: Make sure all profile handlers agree on
profile
ACPI: platform_profile: Check all profile handler to calculate next
ACPI: platform_profile: Allow multiple handlers
platform/x86/amd: pmf: Drop all quirks
Documentation: Add documentation about class interface for platform
profiles
.../ABI/testing/sysfs-platform_profile | 5 +
.../userspace-api/sysfs-platform_profile.rst | 28 +
drivers/acpi/platform_profile.c | 494
++++++++++++++----
.../surface/surface_platform_profile.c | 7 +-
drivers/platform/x86/acer-wmi.c | 5 +-
drivers/platform/x86/amd/pmf/Makefile | 2 +-
drivers/platform/x86/amd/pmf/core.c | 1 -
drivers/platform/x86/amd/pmf/pmf-quirks.c | 66 ---
drivers/platform/x86/amd/pmf/pmf.h | 3 -
drivers/platform/x86/amd/pmf/sps.c | 3 +-
drivers/platform/x86/asus-wmi.c | 5 +-
drivers/platform/x86/dell/alienware-wmi.c | 3 +-
drivers/platform/x86/dell/dell-pc.c | 35 +-
drivers/platform/x86/hp/hp-wmi.c | 3 +-
drivers/platform/x86/ideapad-laptop.c | 3 +-
.../platform/x86/inspur_platform_profile.c | 6 +-
drivers/platform/x86/thinkpad_acpi.c | 3 +-
include/linux/platform_profile.h | 6 +-
18 files changed, 488 insertions(+), 190 deletions(-)
delete mode 100644 drivers/platform/x86/amd/pmf/pmf-quirks.c
base-commit: d68cb6023356af3bd3193983ad4ec03954a0b3e2
