diff options
Diffstat (limited to 'drivers/platform/surface/surface_aggregator_tabletsw.c')
| -rw-r--r-- | drivers/platform/surface/surface_aggregator_tabletsw.c | 180 |
1 files changed, 141 insertions, 39 deletions
diff --git a/drivers/platform/surface/surface_aggregator_tabletsw.c b/drivers/platform/surface/surface_aggregator_tabletsw.c index 9fed800c7cc0..8f52b62d1c19 100644 --- a/drivers/platform/surface/surface_aggregator_tabletsw.c +++ b/drivers/platform/surface/surface_aggregator_tabletsw.c @@ -20,16 +20,23 @@ struct ssam_tablet_sw; +struct ssam_tablet_sw_state { + u32 source; + u32 state; +}; + struct ssam_tablet_sw_ops { - int (*get_state)(struct ssam_tablet_sw *sw, u32 *state); - const char *(*state_name)(struct ssam_tablet_sw *sw, u32 state); - bool (*state_is_tablet_mode)(struct ssam_tablet_sw *sw, u32 state); + int (*get_state)(struct ssam_tablet_sw *sw, struct ssam_tablet_sw_state *state); + const char *(*state_name)(struct ssam_tablet_sw *sw, + const struct ssam_tablet_sw_state *state); + bool (*state_is_tablet_mode)(struct ssam_tablet_sw *sw, + const struct ssam_tablet_sw_state *state); }; struct ssam_tablet_sw { struct ssam_device *sdev; - u32 state; + struct ssam_tablet_sw_state state; struct work_struct update_work; struct input_dev *mode_switch; @@ -45,9 +52,11 @@ struct ssam_tablet_sw_desc { struct { u32 (*notify)(struct ssam_event_notifier *nf, const struct ssam_event *event); - int (*get_state)(struct ssam_tablet_sw *sw, u32 *state); - const char *(*state_name)(struct ssam_tablet_sw *sw, u32 state); - bool (*state_is_tablet_mode)(struct ssam_tablet_sw *sw, u32 state); + int (*get_state)(struct ssam_tablet_sw *sw, struct ssam_tablet_sw_state *state); + const char *(*state_name)(struct ssam_tablet_sw *sw, + const struct ssam_tablet_sw_state *state); + bool (*state_is_tablet_mode)(struct ssam_tablet_sw *sw, + const struct ssam_tablet_sw_state *state); } ops; struct { @@ -61,7 +70,7 @@ struct ssam_tablet_sw_desc { static ssize_t state_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ssam_tablet_sw *sw = dev_get_drvdata(dev); - const char *state = sw->ops.state_name(sw, sw->state); + const char *state = sw->ops.state_name(sw, &sw->state); return sysfs_emit(buf, "%s\n", state); } @@ -79,19 +88,19 @@ static const struct attribute_group ssam_tablet_sw_group = { static void ssam_tablet_sw_update_workfn(struct work_struct *work) { struct ssam_tablet_sw *sw = container_of(work, struct ssam_tablet_sw, update_work); + struct ssam_tablet_sw_state state; int tablet, status; - u32 state; status = sw->ops.get_state(sw, &state); if (status) return; - if (sw->state == state) + if (sw->state.source == state.source && sw->state.state == state.state) return; sw->state = state; /* Send SW_TABLET_MODE event. */ - tablet = sw->ops.state_is_tablet_mode(sw, state); + tablet = sw->ops.state_is_tablet_mode(sw, &state); input_report_switch(sw->mode_switch, SW_TABLET_MODE, tablet); input_sync(sw->mode_switch); } @@ -146,7 +155,7 @@ static int ssam_tablet_sw_probe(struct ssam_device *sdev) sw->mode_switch->id.bustype = BUS_HOST; sw->mode_switch->dev.parent = &sdev->dev; - tablet = sw->ops.state_is_tablet_mode(sw, sw->state); + tablet = sw->ops.state_is_tablet_mode(sw, &sw->state); input_set_capability(sw->mode_switch, EV_SW, SW_TABLET_MODE); input_report_switch(sw->mode_switch, SW_TABLET_MODE, tablet); @@ -203,9 +212,10 @@ enum ssam_kip_cover_state { SSAM_KIP_COVER_STATE_FOLDED_BACK = 0x05, }; -static const char *ssam_kip_cover_state_name(struct ssam_tablet_sw *sw, u32 state) +static const char *ssam_kip_cover_state_name(struct ssam_tablet_sw *sw, + const struct ssam_tablet_sw_state *state) { - switch (state) { + switch (state->state) { case SSAM_KIP_COVER_STATE_DISCONNECTED: return "disconnected"; @@ -222,14 +232,15 @@ static const char *ssam_kip_cover_state_name(struct ssam_tablet_sw *sw, u32 stat return "folded-back"; default: - dev_warn(&sw->sdev->dev, "unknown KIP cover state: %u\n", state); + dev_warn(&sw->sdev->dev, "unknown KIP cover state: %u\n", state->state); return "<unknown>"; } } -static bool ssam_kip_cover_state_is_tablet_mode(struct ssam_tablet_sw *sw, u32 state) +static bool ssam_kip_cover_state_is_tablet_mode(struct ssam_tablet_sw *sw, + const struct ssam_tablet_sw_state *state) { - switch (state) { + switch (state->state) { case SSAM_KIP_COVER_STATE_DISCONNECTED: case SSAM_KIP_COVER_STATE_FOLDED_CANVAS: case SSAM_KIP_COVER_STATE_FOLDED_BACK: @@ -240,7 +251,7 @@ static bool ssam_kip_cover_state_is_tablet_mode(struct ssam_tablet_sw *sw, u32 s return false; default: - dev_warn(&sw->sdev->dev, "unknown KIP cover state: %d\n", sw->state); + dev_warn(&sw->sdev->dev, "unknown KIP cover state: %d\n", state->state); return true; } } @@ -252,7 +263,7 @@ SSAM_DEFINE_SYNC_REQUEST_R(__ssam_kip_get_cover_state, u8, { .instance_id = 0x00, }); -static int ssam_kip_get_cover_state(struct ssam_tablet_sw *sw, u32 *state) +static int ssam_kip_get_cover_state(struct ssam_tablet_sw *sw, struct ssam_tablet_sw_state *state) { int status; u8 raw; @@ -263,7 +274,8 @@ static int ssam_kip_get_cover_state(struct ssam_tablet_sw *sw, u32 *state) return status; } - *state = raw; + state->source = 0; /* Unused for KIP switch. */ + state->state = raw; return 0; } @@ -312,11 +324,24 @@ MODULE_PARM_DESC(tablet_mode_in_slate_state, "Enable tablet mode in slate device #define SSAM_EVENT_POS_CID_POSTURE_CHANGED 0x03 #define SSAM_POS_MAX_SOURCES 4 -enum ssam_pos_state { - SSAM_POS_POSTURE_LID_CLOSED = 0x00, - SSAM_POS_POSTURE_LAPTOP = 0x01, - SSAM_POS_POSTURE_SLATE = 0x02, - SSAM_POS_POSTURE_TABLET = 0x03, +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, + SSAM_POS_SLS_SLATE = 0x02, + SSAM_POS_SLS_TABLET = 0x03, }; struct ssam_sources_list { @@ -324,42 +349,116 @@ struct ssam_sources_list { __le32 id[SSAM_POS_MAX_SOURCES]; } __packed; -static const char *ssam_pos_state_name(struct ssam_tablet_sw *sw, u32 state) +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) { - case SSAM_POS_POSTURE_LID_CLOSED: + case SSAM_POS_SLS_LID_CLOSED: return "closed"; - case SSAM_POS_POSTURE_LAPTOP: + case SSAM_POS_SLS_LAPTOP: return "laptop"; - case SSAM_POS_POSTURE_SLATE: + case SSAM_POS_SLS_SLATE: return "slate"; - case SSAM_POS_POSTURE_TABLET: + case SSAM_POS_SLS_TABLET: return "tablet"; default: - dev_warn(&sw->sdev->dev, "unknown device posture: %u\n", state); + dev_warn(&sw->sdev->dev, "unknown device posture for SLS: %u\n", state); return "<unknown>"; } } -static bool ssam_pos_state_is_tablet_mode(struct ssam_tablet_sw *sw, u32 state) +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); + + default: + dev_warn(&sw->sdev->dev, "unknown device posture source: %u\n", state->source); + return "<unknown>"; + } +} + +static bool ssam_pos_state_is_tablet_mode_cover(struct ssam_tablet_sw *sw, u32 state) { switch (state) { - case SSAM_POS_POSTURE_LAPTOP: - case SSAM_POS_POSTURE_LID_CLOSED: + 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; - case SSAM_POS_POSTURE_SLATE: + 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) { + case SSAM_POS_SLS_LAPTOP: + case SSAM_POS_SLS_LID_CLOSED: + return false; + + case SSAM_POS_SLS_SLATE: return tablet_mode_in_slate_state; - case SSAM_POS_POSTURE_TABLET: + case SSAM_POS_SLS_TABLET: return true; default: - dev_warn(&sw->sdev->dev, "unknown device posture: %u\n", state); + dev_warn(&sw->sdev->dev, "unknown device posture for SLS: %u\n", state); + return true; + } +} + +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); + + default: + dev_warn(&sw->sdev->dev, "unknown device posture source: %u\n", state->source); return true; } } @@ -450,9 +549,10 @@ static int ssam_pos_get_posture_for_source(struct ssam_tablet_sw *sw, u32 source return 0; } -static int ssam_pos_get_posture(struct ssam_tablet_sw *sw, u32 *state) +static int ssam_pos_get_posture(struct ssam_tablet_sw *sw, struct ssam_tablet_sw_state *state) { u32 source_id; + u32 source_state; int status; status = ssam_pos_get_source(sw, &source_id); @@ -461,13 +561,15 @@ static int ssam_pos_get_posture(struct ssam_tablet_sw *sw, u32 *state) return status; } - status = ssam_pos_get_posture_for_source(sw, source_id, state); + status = ssam_pos_get_posture_for_source(sw, source_id, &source_state); if (status) { dev_err(&sw->sdev->dev, "failed to get posture value for source %u: %d\n", source_id, status); return status; } + state->source = source_id; + state->state = source_state; return 0; } |