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platform/surface: aggregator_tabletsw: Add support for Type-Cover posture source

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Implement support for the Type-Cover posture source (ID 0x00), found on
the Surface Pro 9.

Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Link: https://lore.kernel.org/r/20230304194611.87770-3-luzmaximilian@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Maximilian Luz 2023-03-04 20:46:10 +01:00 committed by Hans de Goede
parent b58a444d7f
commit 37ff64cd81
1 changed files with 57 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

57
drivers/platform/surface/surface_aggregator_tabletsw.c
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@ -325,9 +325,18 @@ MODULE_PARM_DESC(tablet_mode_in_slate_state, "Enable tablet mode in slate device
#define SSAM_POS_MAX_SOURCES 4
enum ssam_pos_source_id {
SSAM_POS_SOURCE_COVER = 0x00,
SSAM_POS_SOURCE_SLS = 0x03,
};
enum ssam_pos_state_cover {
SSAM_POS_COVER_DISCONNECTED = 0x01,
SSAM_POS_COVER_CLOSED = 0x02,
SSAM_POS_COVER_LAPTOP = 0x03,
SSAM_POS_COVER_FOLDED_CANVAS = 0x04,
SSAM_POS_COVER_FOLDED_BACK = 0x05,
};
enum ssam_pos_state_sls {
SSAM_POS_SLS_LID_CLOSED = 0x00,
SSAM_POS_SLS_LAPTOP = 0x01,
@ -340,6 +349,30 @@ struct ssam_sources_list {
__le32 id[SSAM_POS_MAX_SOURCES];
} __packed;
static const char *ssam_pos_state_name_cover(struct ssam_tablet_sw *sw, u32 state)
{
switch (state) {
case SSAM_POS_COVER_DISCONNECTED:
return "disconnected";
case SSAM_POS_COVER_CLOSED:
return "closed";
case SSAM_POS_COVER_LAPTOP:
return "laptop";
case SSAM_POS_COVER_FOLDED_CANVAS:
return "folded-canvas";
case SSAM_POS_COVER_FOLDED_BACK:
return "folded-back";
default:
dev_warn(&sw->sdev->dev, "unknown device posture for type-cover: %u\n", state);
return "<unknown>";
}
}
static const char *ssam_pos_state_name_sls(struct ssam_tablet_sw *sw, u32 state)
{
switch (state) {
@ -365,6 +398,9 @@ static const char *ssam_pos_state_name(struct ssam_tablet_sw *sw,
const struct ssam_tablet_sw_state *state)
{
switch (state->source) {
case SSAM_POS_SOURCE_COVER:
return ssam_pos_state_name_cover(sw, state->state);
case SSAM_POS_SOURCE_SLS:
return ssam_pos_state_name_sls(sw, state->state);
@ -374,6 +410,24 @@ static const char *ssam_pos_state_name(struct ssam_tablet_sw *sw,
}
}
static bool ssam_pos_state_is_tablet_mode_cover(struct ssam_tablet_sw *sw, u32 state)
{
switch (state) {
case SSAM_POS_COVER_DISCONNECTED:
case SSAM_POS_COVER_FOLDED_CANVAS:
case SSAM_POS_COVER_FOLDED_BACK:
return true;
case SSAM_POS_COVER_CLOSED:
case SSAM_POS_COVER_LAPTOP:
return false;
default:
dev_warn(&sw->sdev->dev, "unknown device posture for type-cover: %u\n", state);
return true;
}
}
static bool ssam_pos_state_is_tablet_mode_sls(struct ssam_tablet_sw *sw, u32 state)
{
switch (state) {
@ -397,6 +451,9 @@ static bool ssam_pos_state_is_tablet_mode(struct ssam_tablet_sw *sw,
const struct ssam_tablet_sw_state *state)
{
switch (state->source) {
case SSAM_POS_SOURCE_COVER:
return ssam_pos_state_is_tablet_mode_cover(sw, state->state);
case SSAM_POS_SOURCE_SLS:
return ssam_pos_state_is_tablet_mode_sls(sw, state->state);