platform/x86: thinkpad_acpi: Explicitly set to balanced mode on startup

It was observed that on a Thinkpad T14 Gen1 (AMD) that the platform
profile is starting up in 'low-power' mode after refreshing what the
firmware had.  This is most likely a firmware bug, but as a harmless
workaround set the default profile to 'balanced' at thinkpad_acpi startup.

Reported-by: madcatx@atlas.cz
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216347
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220819180101.6383-1-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 22d4e8633e30e953cec9a558751bd218f17ce26c..2dbb9fc011a7a639919dd3888ada9d1f0e45ac1a 100644 (file)
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -10592,10 +10592,9 @@ static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
        /* Ensure initial values are correct */
        dytc_profile_refresh();
 
-       /* Set AMT correctly now we know current profile */
-       if ((dytc_capabilities & BIT(DYTC_FC_PSC)) &&
-           (dytc_capabilities & BIT(DYTC_FC_AMT)))
-           dytc_control_amt(dytc_current_profile == PLATFORM_PROFILE_BALANCED);
+       /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */
+       if (dytc_capabilities & BIT(DYTC_FC_PSC))
+               dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
 
        return 0;
 }