https://bugs.freedesktop.org/show_bug.cgi?id=101008

Signed-off-by: Peter Hutterer <[email protected]>
---
This builds on top of the patch series here
https://lists.freedesktop.org/archives/wayland-devel/2017-April/033942.html
since rebased and available here:
https://github.com/whot/libinput/tree/wip/sw-tablet-mode

 src/evdev.c                                | 48 ++++++++++++---
 src/evdev.h                                |  1 +
 src/libinput.h                             | 16 +++++
 test/litest-device-thinkpad-extrabuttons.c |  1 +
 test/litest.c                              |  3 +
 test/test-switch.c                         | 95 +++++++++++++++---------------
 6 files changed, 108 insertions(+), 56 deletions(-)

diff --git a/src/evdev.c b/src/evdev.c
index 1b4ec934..8cc8a2cc 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -958,6 +958,20 @@ fallback_process_switch(struct fallback_dispatch *dispatch,
                                     LIBINPUT_SWITCH_RF_DISABLED,
                                     state);
                break;
+       case SW_TABLET_MODE:
+               if (dispatch->sw.tablet_mode_state == e->value)
+                       return;
+
+               dispatch->sw.tablet_mode_state = e->value;
+               if (e->value)
+                       state = LIBINPUT_SWITCH_STATE_ON;
+               else
+                       state = LIBINPUT_SWITCH_STATE_OFF;
+               switch_notify_toggle(&device->base,
+                                    time,
+                                    LIBINPUT_SWITCH_TABLET_MODE,
+                                    state);
+               break;
        }
 }
 
@@ -1288,14 +1302,21 @@ fallback_sync_initial_state(struct evdev_device *device,
                            struct evdev_dispatch *evdev_dispatch)
 {
        struct fallback_dispatch *dispatch = fallback_dispatch(evdev_dispatch);
+       uint64_t time = libinput_now(evdev_libinput_context(device));
 
        if (dispatch->sw.rfkill_all_state) {
-               uint64_t time = libinput_now(evdev_libinput_context(device));
                switch_notify_toggle(&device->base,
                                     time,
                                     LIBINPUT_SWITCH_RF_DISABLED,
                                     LIBINPUT_SWITCH_STATE_ON);
        }
+
+       if (dispatch->sw.tablet_mode_state) {
+               switch_notify_toggle(&device->base,
+                                    time,
+                                    LIBINPUT_SWITCH_TABLET_MODE,
+                                    LIBINPUT_SWITCH_STATE_ON);
+       }
 }
 
 static void
@@ -1845,13 +1866,23 @@ static inline void
 fallback_dispatch_init_switch(struct fallback_dispatch *dispatch,
                              struct evdev_device *device)
 {
-       if (!libevdev_has_event_code(device->evdev, EV_SW, SW_RFKILL_ALL))
-               return;
+       int val;
 
-       dispatch->sw.rfkill_all_state = libevdev_get_event_value(device->evdev,
-                                                                EV_SW,
-                                                                SW_RFKILL_ALL);
-       device->seat_caps |= EVDEV_DEVICE_SWITCH;
+       if (libevdev_has_event_code(device->evdev, EV_SW, SW_RFKILL_ALL)) {
+               val = libevdev_get_event_value(device->evdev,
+                                              EV_SW,
+                                              SW_RFKILL_ALL);
+               dispatch->sw.rfkill_all_state = val;
+               device->seat_caps |= EVDEV_DEVICE_SWITCH;
+       }
+
+       if (libevdev_has_event_code(device->evdev, EV_SW, SW_TABLET_MODE)) {
+               val = libevdev_get_event_value(device->evdev,
+                                              EV_SW,
+                                              SW_TABLET_MODE);
+               dispatch->sw.tablet_mode_state = val;
+               device->seat_caps |= EVDEV_DEVICE_SWITCH;
+       }
 }
 
 static struct evdev_dispatch *
@@ -3214,6 +3245,9 @@ evdev_device_has_switch(struct evdev_device *device,
        case LIBINPUT_SWITCH_RF_DISABLED:
                code = SW_RFKILL_ALL;
                break;
+       case LIBINPUT_SWITCH_TABLET_MODE:
+               code = SW_TABLET_MODE;
+               break;
        default:
                return -1;
        }
diff --git a/src/evdev.h b/src/evdev.h
index 02c14e65..0587740d 100644
--- a/src/evdev.h
+++ b/src/evdev.h
@@ -359,6 +359,7 @@ struct fallback_dispatch {
 
        struct {
                int rfkill_all_state;
+               int tablet_mode_state;
        } sw;
 
        /* Bitmask of pressed keys used to ignore initial release events from
diff --git a/src/libinput.h b/src/libinput.h
index 38abae8e..316f210a 100644
--- a/src/libinput.h
+++ b/src/libinput.h
@@ -639,6 +639,22 @@ enum libinput_switch {
         * c) toggle the state to match the switch state (if required)
         */
        LIBINPUT_SWITCH_RF_DISABLED,
+
+       /**
+        * This switch indicates whether the device is in normal laptop mode
+        * or behaves like a tablet-like device where the primary
+        * interaction is usually a touch screen. When in tablet mode, the
+        * keyboard and touchpad are usually inaccessible.
+        *
+        * If the switch is in state @ref LIBINPUT_SWITCH_STATE_OFF, the
+        * device is in laptop mode. If the switch is in state @ref
+        * LIBINPUT_SWITCH_STATE_ON, the device is in tablet mode and the
+        * keyboard or touchpad may not be  accessible.
+        *
+        * It is up to the caller to identify which devices are inaccessible
+        * in tablet mode.
+        */
+       LIBINPUT_SWITCH_TABLET_MODE,
 };
 
 /**
diff --git a/test/litest-device-thinkpad-extrabuttons.c 
b/test/litest-device-thinkpad-extrabuttons.c
index d5ff4303..84541493 100644
--- a/test/litest-device-thinkpad-extrabuttons.c
+++ b/test/litest-device-thinkpad-extrabuttons.c
@@ -71,6 +71,7 @@ static int events[] = {
        EV_KEY, KEY_BRIGHTNESS_MIN,
 
        EV_SW, SW_RFKILL_ALL,
+       EV_SW, SW_TABLET_MODE,
 
        -1, -1,
 };
diff --git a/test/litest.c b/test/litest.c
index d0704bec..14eb2722 100644
--- a/test/litest.c
+++ b/test/litest.c
@@ -2178,6 +2178,9 @@ litest_switch_action(struct litest_device *dev,
        case LIBINPUT_SWITCH_RF_DISABLED:
                code = SW_RFKILL_ALL;
                break;
+       case LIBINPUT_SWITCH_TABLET_MODE:
+               code = SW_TABLET_MODE;
+               break;
        default:
                litest_abort_msg("Invalid switch %d", sw);
                break;
diff --git a/test/test-switch.c b/test/test-switch.c
index af184607..1fcf61d4 100644
--- a/test/test-switch.c
+++ b/test/test-switch.c
@@ -36,13 +36,6 @@ switch_has_lid(struct litest_device *dev)
                                                 LIBINPUT_SWITCH_LID);
 }
 
-static inline bool
-switch_has_rfkill(struct litest_device *dev)
-{
-       return libinput_device_switch_has_switch(dev->libinput_device,
-                                                LIBINPUT_SWITCH_RF_DISABLED);
-}
-
 START_TEST(switch_has_lid_switch)
 {
        struct litest_device *dev = litest_current_device();
@@ -79,35 +72,47 @@ START_TEST(switch_has_rfkill_switch)
 }
 END_TEST
 
+START_TEST(switch_has_tablet_mode_switch)
+{
+       struct litest_device *dev = litest_current_device();
+
+       if (!libevdev_has_event_code(dev->evdev, EV_SW, SW_TABLET_MODE))
+               return;
+
+       ck_assert_int_eq(libinput_device_switch_has_switch(dev->libinput_device,
+                                                          
LIBINPUT_SWITCH_TABLET_MODE),
+                        1);
+}
+END_TEST
+
 START_TEST(switch_toggle)
 {
        struct litest_device *dev = litest_current_device();
        struct libinput *li = dev->libinput;
        struct libinput_event *event;
-       enum libinput_switch sw;
-
-       if (switch_has_lid(dev))
-               sw = LIBINPUT_SWITCH_LID;
-       else if (switch_has_rfkill(dev))
-               sw = LIBINPUT_SWITCH_RF_DISABLED;
-       else
-               litest_abort_msg("Missing switch for test");
+       enum libinput_switch sw = _i; /* ranged test */
 
        litest_drain_events(li);
 
        litest_switch_action(dev, sw, LIBINPUT_SWITCH_STATE_ON);
        libinput_dispatch(li);
 
-       event = libinput_get_event(li);
-       litest_is_switch_event(event, sw, LIBINPUT_SWITCH_STATE_ON);
-       libinput_event_destroy(event);
+       if (libinput_device_switch_has_switch(dev->libinput_device, sw)) {
+               event = libinput_get_event(li);
+               litest_is_switch_event(event, sw, LIBINPUT_SWITCH_STATE_ON);
+               libinput_event_destroy(event);
+       } else {
+               litest_assert_empty_queue(li);
+       }
 
        litest_switch_action(dev, sw, LIBINPUT_SWITCH_STATE_OFF);
        libinput_dispatch(li);
 
-       event = libinput_get_event(li);
-       litest_is_switch_event(event, sw, LIBINPUT_SWITCH_STATE_OFF);
-       libinput_event_destroy(event);
+       if (libinput_device_switch_has_switch(dev->libinput_device, sw)) {
+               event = libinput_get_event(li);
+               litest_is_switch_event(event, sw, LIBINPUT_SWITCH_STATE_OFF);
+               libinput_event_destroy(event);
+       }
 
        litest_assert_empty_queue(li);
 }
@@ -118,14 +123,10 @@ START_TEST(switch_toggle_double)
        struct litest_device *dev = litest_current_device();
        struct libinput *li = dev->libinput;
        struct libinput_event *event;
-       enum libinput_switch sw;
+       enum libinput_switch sw = _i; /* ranged test */
 
-       if (switch_has_lid(dev))
-               sw = LIBINPUT_SWITCH_LID;
-       else if (switch_has_rfkill(dev))
-               sw = LIBINPUT_SWITCH_RF_DISABLED;
-       else
-               litest_abort_msg("Missing switch for test");
+       if (!libinput_device_switch_has_switch(dev->libinput_device, sw))
+               return;
 
        litest_drain_events(li);
 
@@ -167,17 +168,13 @@ START_TEST(switch_down_on_init)
        struct litest_device *dev = litest_current_device();
        struct libinput *li;
        struct libinput_event *event;
-       enum libinput_switch sw = LIBINPUT_SWITCH_LID;
+       enum libinput_switch sw = _i; /* ranged test */
 
-       if (switch_has_lid(dev)) {
-               sw = LIBINPUT_SWITCH_LID;
-               if (!lid_switch_is_reliable(dev))
-                       return;
-       } else if (switch_has_rfkill(dev)) {
-               sw = LIBINPUT_SWITCH_RF_DISABLED;
-       } else {
-               litest_abort_msg("Missing switch for test");
-       }
+       if (!libinput_device_switch_has_switch(dev->libinput_device, sw))
+               return;
+
+       if (sw == LIBINPUT_SWITCH_LID && !lid_switch_is_reliable(dev))
+               return;
 
        litest_switch_action(dev, sw, LIBINPUT_SWITCH_STATE_ON);
 
@@ -217,15 +214,11 @@ START_TEST(switch_not_down_on_init)
        struct libinput_event *event;
        enum libinput_switch sw = LIBINPUT_SWITCH_LID;
 
-       if (switch_has_lid(dev)) {
-               sw = LIBINPUT_SWITCH_LID;
-               if (lid_switch_is_reliable(dev))
-                       return;
-       } else if (switch_has_rfkill(dev)) {
+       if (!libinput_device_switch_has_switch(dev->libinput_device, sw))
+               return;
+
+       if (sw == LIBINPUT_SWITCH_LID && lid_switch_is_reliable(dev))
                return;
-       } else {
-               litest_abort_msg("Missing switch for test");
-       }
 
        litest_switch_action(dev, sw, LIBINPUT_SWITCH_STATE_ON);
 
@@ -627,12 +620,16 @@ END_TEST
 void
 litest_setup_tests_lid(void)
 {
+       struct range switches = { LIBINPUT_SWITCH_LID,
+                                 LIBINPUT_SWITCH_TABLET_MODE + 1};
+
        litest_add("switch:has", switch_has_lid_switch, LITEST_SWITCH, 
LITEST_ANY);
        litest_add("switch:has", switch_has_rfkill_switch, LITEST_SWITCH, 
LITEST_ANY);
+       litest_add("switch:has", switch_has_tablet_mode_switch, LITEST_SWITCH, 
LITEST_ANY);
        litest_add("switch:has", switch_has_cap, LITEST_SWITCH, LITEST_ANY);
-       litest_add("switch:toggle", switch_toggle, LITEST_SWITCH, LITEST_ANY);
-       litest_add("switch:toggle", switch_toggle_double, LITEST_SWITCH, 
LITEST_ANY);
-       litest_add("switch:toggle", switch_down_on_init, LITEST_SWITCH, 
LITEST_ANY);
+       litest_add_ranged("switch:toggle", switch_toggle, LITEST_SWITCH, 
LITEST_ANY, &switches);
+       litest_add_ranged("switch:toggle", switch_toggle_double, LITEST_SWITCH, 
LITEST_ANY, &switches);
+       litest_add_ranged("switch:toggle", switch_down_on_init, LITEST_SWITCH, 
LITEST_ANY, &switches);
        litest_add("switch:toggle", switch_not_down_on_init, LITEST_SWITCH, 
LITEST_ANY);
        litest_add("lid:disable_touchpad", lid_disable_touchpad, LITEST_SWITCH, 
LITEST_ANY);
        litest_add("lid:disable_touchpad", lid_disable_touchpad_during_touch, 
LITEST_SWITCH, LITEST_ANY);
-- 
2.12.2

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