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Sat, 20 Jan 2024 18:29:53 -0500 (EST) From: Mark Pearson To: mpearson-lenovo@squebb.ca Cc: corbet@lwn.net, hdegoede@redhat.com, ilpo.jarvinen@linux.intel.com, platform-driver-x86@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] platform/x86: Support for mode FN key Date: Sat, 20 Jan 2024 18:29:34 -0500 Message-ID: <20240120232949.317337-1-mpearson-lenovo@squebb.ca> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1788654042150806082 X-GMAIL-MSGID: 1788654042150806082 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 Reviewed-by: Hans de Goede --- .../admin-guide/laptops/thinkpad-acpi.rst | 7 ++++++- drivers/platform/x86/thinkpad_acpi.c | 20 ++++++++++++++++++- 2 files changed, 25 insertions(+), 2 deletions(-) diff --git a/Documentation/admin-guide/laptops/thinkpad-acpi.rst b/Documentation/admin-guide/laptops/thinkpad-acpi.rst index 98d304010170..7f674a6cfa8a 100644 --- a/Documentation/admin-guide/laptops/thinkpad-acpi.rst +++ b/Documentation/admin-guide/laptops/thinkpad-acpi.rst @@ -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 diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index c4895e9bc714..ceb22f8d8442 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -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; } @@ -11118,7 +11120,23 @@ 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)