platform/x86: thinkpad_acpi: Add BAT1 is primary battery quirk for Thinkpad Yoga...

The Thinkpad Yoga 11e 4th gen with the N3450 / Celeron CPU only has
one battery which is named BAT1 instead of the expected BAT0, add a
quirk for this. This fixes not being able to set the charging tresholds
on this model; and this alsoe fixes the following errors in dmesg:

ACPI: \_SB_.PCI0.LPCB.EC__.HKEY: BCTG evaluated but flagged as error
thinkpad_acpi: Error probing battery 2
battery: extension failed to load: ThinkPad Battery Extension
battery: extension unregistered: ThinkPad Battery Extension

Note that the added quirk is for the "R0K" BIOS versions which are
used on the Thinkpad Yoga 11e 4th gen's with a Celeron CPU, there
is a separate "R0L" BIOS for the i3/i5 based versions. This may also
need the same quirk, but if that really is necessary is unknown.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20201109103550.16265-1-hdegoede@redhat.com

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index e479c844c2bcdf7e76ad4d22be4b6b7e80b6f123..36d9594bca7f4388a92224ea57359a3f24d44b8c 100644 (file)
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -9711,6 +9711,7 @@ static const struct tpacpi_quirk battery_quirk_table[] __initconst = {
        TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */
        TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */
        TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */
+       TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */
 };
 
 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm)