platform/surface: aggregator_tabletsw: Add support for book mode in KIP subsystem

[ Upstream commit 9bed667033e66083d363a11e9414ad401ecc242c ]

Devices with a type-cover have an additional "book" mode, deactivating
type-cover input and turning off its backlight. This is currently
unsupported, leading to the warning

  surface_aggregator_tablet_mode_switch 01:0e:01:00:01: unknown KIP cover state: 6

Therefore, add support for this state and map it to enable tablet-mode.

Fixes: 9f794056db5b ("platform/surface: Add KIP/POS tablet-mode switch driver")
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Link: https://lore.kernel.org/r/20230525213218.2797480-2-luzmaximilian@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/platform/surface/surface_aggregator_tabletsw.c b/drivers/platform/surface/surface_aggregator_tabletsw.c
index 27d95a6a78513fa48bf66ef64aa602d467219a07..af8b547cffdc6450168086a22a398d3254993e9b 100644 (file)
--- a/drivers/platform/surface/surface_aggregator_tabletsw.c
+++ b/drivers/platform/surface/surface_aggregator_tabletsw.c
@@ -201,6 +201,7 @@ enum ssam_kip_cover_state {
        SSAM_KIP_COVER_STATE_LAPTOP        = 0x03,
        SSAM_KIP_COVER_STATE_FOLDED_CANVAS = 0x04,
        SSAM_KIP_COVER_STATE_FOLDED_BACK   = 0x05,
+       SSAM_KIP_COVER_STATE_BOOK          = 0x06,
 };
 
 static const char *ssam_kip_cover_state_name(struct ssam_tablet_sw *sw, u32 state)
@@ -221,6 +222,9 @@ static const char *ssam_kip_cover_state_name(struct ssam_tablet_sw *sw, u32 stat
        case SSAM_KIP_COVER_STATE_FOLDED_BACK:
                return "folded-back";
 
+       case SSAM_KIP_COVER_STATE_BOOK:
+               return "book";
+
        default:
                dev_warn(&sw->sdev->dev, "unknown KIP cover state: %u\n", state);
                return "<unknown>";
@@ -233,6 +237,7 @@ static bool ssam_kip_cover_state_is_tablet_mode(struct ssam_tablet_sw *sw, u32 s
        case SSAM_KIP_COVER_STATE_DISCONNECTED:
        case SSAM_KIP_COVER_STATE_FOLDED_CANVAS:
        case SSAM_KIP_COVER_STATE_FOLDED_BACK:
+       case SSAM_KIP_COVER_STATE_BOOK:
                return true;
 
        case SSAM_KIP_COVER_STATE_CLOSED: