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platform/x86: Support for mode FN key 

New Thinkpads have added a 'Mode' Function key that on Windows allows
you to choose the active profile (low-power, balanced, performance)

Added suppoort for this hotkey (F8), and have it cycle through the
options available.

Tested on X1 Carbon G12.

Signed-off-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20240120232949.317337-1-mpearson-lenovo@squebb.ca
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Mark Pearson 2024-01-20 18:29:34 -05:00 committed by Ilpo Järvinen
parent 2cee4d0c82
commit 0959afbafa
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GPG Key ID: 59AC4F6153E5CE31
2 changed files with 25 additions and 2 deletions
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7
Documentation/admin-guide/laptops/thinkpad-acpi.rst
View File

@ -444,7 +444,9 @@ event code Key Notes
0x1008 0x07 FN+F8 IBM: toggle screen expand
Lenovo: configure UltraNav,
or toggle screen expand
or toggle screen expand.
On newer platforms (2024+)
replaced by 0x131f (see below)
0x1009 0x08 FN+F9 -
@ -504,6 +506,9 @@ event code Key Notes
0x1019 0x18 unknown
0x131f ... FN+F8 Platform Mode change.
Implemented in driver.
... ... ...
0x1020 0x1F unknown

20
drivers/platform/x86/thinkpad_acpi.c
View File

@ -166,6 +166,7 @@ enum tpacpi_hkey_event_t {
TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */
TP_HKEY_EV_AMT_TOGGLE = 0x131a, /* Toggle AMT on/off */
TP_HKEY_EV_PROFILE_TOGGLE = 0x131f, /* Toggle platform profile */
/* Reasons for waking up from S3/S4 */
TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
@ -3731,6 +3732,7 @@ static bool hotkey_notify_extended_hotkey(const u32 hkey)
switch (hkey) {
case TP_HKEY_EV_PRIVACYGUARD_TOGGLE:
case TP_HKEY_EV_AMT_TOGGLE:
case TP_HKEY_EV_PROFILE_TOGGLE:
tpacpi_driver_event(hkey);
return true;
}
@ -11115,7 +11117,23 @@ static void tpacpi_driver_event(const unsigned int hkey_event)
else
dytc_control_amt(!dytc_amt_active);
}
if (hkey_event == TP_HKEY_EV_PROFILE_TOGGLE) {
switch (dytc_current_profile) {
case PLATFORM_PROFILE_LOW_POWER:
dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
break;
case PLATFORM_PROFILE_BALANCED:
dytc_profile_set(NULL, PLATFORM_PROFILE_PERFORMANCE);
break;
case PLATFORM_PROFILE_PERFORMANCE:
dytc_profile_set(NULL, PLATFORM_PROFILE_LOW_POWER);
break;
default:
pr_warn("Profile HKEY unexpected profile %d", dytc_current_profile);
}
/* Notify user space the profile changed */
platform_profile_notify();
}
}
static void hotkey_driver_event(const unsigned int scancode)